Actionsets: Add ability for plugins to add actions for core actionsets (i.e. folders:edit) (#88776)

* initial commit

* Action sets stored
remove the dependancy for actionsets
got the actionsets registered
storing the permissions

* fix golanglinting

* remove unused struct field

* wip

* actionset registry for a plugin from the actionsetservice

* update to make declareactionset the primary way of plugin registration and modification

* declare actually extends actionsets

* tests fixed

* tests skipped

* skip tests

* skip tests

* skip tests

* skip tests

* change to warning instead

* remove step from pipeline to see if it fails due to plugin not registering

* reintroduce step but remove features dependancy

* add back the tests that were failing

* remove comments and another skip test

* fix a comment and remove unneeded changes

* fix and clean up, put the behaviour behind a feature toggle

* clean up

* fixing tests

* hard-code allowed action sets for plugins

* Apply suggestions from code review

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

* small cleanup

---------

Co-authored-by: IevaVasiljeva <ieva.vasiljeva@grafana.com>
Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

pkg/plugins/models.go

@@ -314,8 +314,6 @@ func (e Error) PublicMessage() string {
 	return "Plugin failed to load"
 }
 
-// Access-Control related definitions
-
 // RoleRegistration stores a role and its assignments to basic roles
 // (Viewer, Editor, Admin, Grafana Admin)
 type RoleRegistration struct {
@@ -335,6 +333,12 @@ type Permission struct {
 	Scope  string `json:"scope"`
 }
 
+// ActionSet is the model for ActionSet in RBAC.
+type ActionSet struct {
+	Action  string   `json:"action"`
+	Actions []string `json:"actions"`
+}
+
 type QueryCachingConfig struct {
 	Enabled bool  `json:"enabled"`
 	TTLMS   int64 `json:"TTLMs"`