Adds some fixes of types and a new section describing how 
you can help with the Grafana project related to issues.

Ref #17648

* Don't display changelog category title when no items

The output of the changelog is meant to be copy/pasted with ease. When a
changelog category does not contain items is better to not display title
at all thus avoiding having the manually modify the output as we include
it in the steps of the process.

* Introduce a CLI task to close milestones whilst doing a Grafana release

As part of a Grafana release, we need to eventually close the GitHub
milestone to indicate is done and remove all the cherry-pick labels from
issues/prs within the milestone to avoid our cherry-pick CLI command to
pick them up on the next release.

* Abstract the GitHub client into a module

* Introduce `GitHubClient` to all CLI tasks

* feat: Add new picker to DashNavTimeControls

* chore: noImplicitAny limit reached

* chore: noImplicityAny fix

* chore: Add momentUtc helper to avoid the isUtc conditionals

* chore: Move getRaw from Explore's time picker to grafana/ui utils and rename to getRawRange

* feat: Use helper functions to convert utc to browser time

* fix: Dont Select current value when pressing tab when using Time Picker

* fix: Add tabIndex to time range inputs so tab works smoothly and prevent mouseDown event to propagate to react-select

* fix: Add spacing to custom range labels

* fix: Updated snapshot

* fix: Re-adding getRaw() temporary to fix the build

* fix: Disable scroll event in Popper when we're using the TimePicker so the popup wont "follow" the menu

* fix: Move all "Last xxxx" quick ranges to the menu and show a "UTC" text when applicable

* fix: Add zoom functionality

* feat: Add logic to mark selected option as active

* fix: Add tooltip to zoom button

* fix: lint fix after rebase

* chore: Remove old time picker from DashNav

* TimePicker: minor design update

* chore: Move all time picker quick ranges to the menu

* fix: Remove the popover border-right, since the quick ranges are gone

* chore: Remove function not in use

* Fix: Close time picker on resize event

* Fix: Remove border bottom

* Fix: Use fa icons on prev/next arrows

* Fix: Pass ref from TimePicker to TimePickerOptionGroup so the popover will align as it should

* Fix: time picker ui adjustments to get better touch area on buttons

* Fix: Dont increase line height on large screens

* TimePicker: style updates

* Fix: Add more prominent colors for selected dates and fade out dates in previous/next month

* TimePicker: style updates2

* TimePicker: Big refactorings and style changes

* Removed use of Popper not sure we need that here?
* Made active selected item in the list have the "selected" checkmark
* Changed design of popover
* Changed design of and implementation of the Custom selection in the dropdown it did not feel like a item you
could select like the rest now the list is just a normal list

* TimePicker: Refactoring & style changes

* TimePicker: use same date format everywhere

* TimePicker: Calendar style updates

* TimePicker: fixed unit test

* fixed unit test

* TimeZone: refactoring time zone type

* TimePicker: refactoring

* TimePicker: finally to UTC to work

* TimePicker: better way to handle calendar utc dates

* TimePicker: Fixed tooltip issues

* Updated snapshot

* TimePicker: moved tooltip from DashNavControls into TimePicker

Remove leading backslash from url 

* WIP prometheus editor same in panel

* Dont use panel in plugin editors

* prettiered modified files

* Fix step in external link

* Prevent exiting edit mode when slate suggestions are shown

* Blur behavior and $__interval variable

* Remove unused query controller

* Basic render test

* Chore: Fixes blacklisted import

* Refactor: Adds correct start and end time

`backround` -> `backGround`

Adds a security policy document. For reference, https://help.github.com/en/articles/adding-a-security-policy-to-your-repository.

Closes #17649

Adds a support resource document. For reference, 
https://help.github.com/en/articles/adding-support-resources-to-your-project.

Closes #17650

Adds a first version of project documentation/guideline for triaging 
of issues. This adds some additional content and context so that 
the issue triage process can be understood by both maintainers 
and existing/new contributors and other interested parties.

Co-Authored-By: Andrej Ocenas <mr.ocenas@gmail.com>

Closes #17648

* Update slate types

* Fix noImplicitAny

fixes #17643 and adds test to check for commented out lines (but will only catch `;`, not `#`).

* Explore: Improves performance of Logs element by limiting re-rendering
Re-renders only when query has finished executing or when deduplication
strategy changes.
Closes #17663

* Explore: Adds logsHighlighterExpressions as prop to consider when re-rendering Logs

Follow-up to PR #17048. Flag the new serve_from_sub_path option as available in 6.3.

* move config to grafana runtime

* set defaults

* defaults in constructor

* use @types/systemjs

* rename Settings to GrafanaBootConfig

* Fix basic noImplicitAny errors

* noImplicitAny HeatmapCtrl

* Update error limit

* Add multildap config example

* Publicize mocks for multildap module

* noImplicitAny: TableRenderer

* noImplicitAny and add types

* HeatmapData interface

* Heatmap rendering

* Fix optional type

* Remove use of lodash

* Fixes #17592

* Remove console.log

fixes #17641

first step in moving non-ui components to their own package

* Explore: Prometheus query errors now show
Fixes: #17435

* Explore: Adds test to ensure prometheus query errors are reported

* Explore: removes implicit anys introduced previously

Progress: #14714

* noImplicitAny on Singlestat

* Lower threshold

* Fix fixes

`grafana-cli` uses the third-party library to define the flags and not
the standard library. Using `flag.Parse` conflicts with the defined
flags from our third-party library.

In the case where `flag.Parse` is used, the CLI assumes that definitions
provided are not needed and will not define them; producing errors of
the kind `flag provided but not defined --example-flag`.

Using the context to read any arguments (including flags) is the
recommended approach by the third-party library.

* Chore: Remove implicit anys from ResultProcessor and tests

* Chore: Removes implicit anys for /loki/**/*.ts

* Chore: Removes implicit anys for prometheus/**/*

Closes #17571

The API changed so it expects a numeric level rather than a boolean flag.  Since 6.1 plugins using jsonTree just show an empty div

Fixes #17619