Adds alerting for the Azure Monitor API in the Azure Monitor datasource

Azure Monitor: refactor #15087

Azure Monitor: improve autocomplete for Log Analytics and App Insights editor

revert ds_proxy timeout and implement dataproxy timeout correctly

WIP: Datasources with custom time range handling should always take dashboard timezone into consideration

[skip ci]

Make sure alert notifier provisioning directory are created for deb and rpm packages

Not needed for alerting (as the query intervalms will always be 0) but needed
later when being called from the frontend)

renames usage state metric for auth_token

Fix plugin loading failure message not being displayed

Fixed missing time axis on graph due to width not being passed

Clear visualization picker search on picker close

Fix navigate to folder with only uid

-f check if a file exists. -d checks if the dir exists

A useful function that was ported from kbn.ts and can be used
to convert milliseconds into a kbn unit

Fix for logs graph series names (level names)

as noted, sessions might not be a good name for this metrics.
while devices would be a better name for users I think we should
align the name with the code as much as possible. The ui listing
all auth_tokens per user should probarbly say "devices" instead