* refactor(permissionlist): replace legacyform components with next-gen equivalents

* refactor(permissionlist): replace legacyform components

* refactor(permissionlist): clean up PermissionsInfo

* feat(grafana-ui): define line-height for Select option descriptions

* refactor(permissionlist): remove debug code

* refactor(permissionlist): simplify component tree with horizontalgroup. Add label

* refactor(permissionlist): remove redundant classname from Select