Plugins: Allow disabling angular deprecation UI for specific plugins (#77026)

* Plugins:Allow disabling angular deprecation UI for specific plugins

* add backend test

* changed test names

* lint

* Removed angular properties from DataSourceDTO

* Update tests

* Move angularDetected and hideAngularDeprecation in angularMeta property

* Fix angular property name in AppPluginConfig

* Fix reference to angularMeta.detected

* Fix hide_angular_deprecation not working for core plugins

* lint

pkg/plugins/plugins.go

@@ -55,7 +55,7 @@ type Plugin struct {
 	Module  string
 	BaseURL string
 
-	AngularDetected bool
+	Angular AngularMeta
 
 	ExternalService *auth.ExternalService
 
@@ -67,6 +67,11 @@ type Plugin struct {
 	mu sync.Mutex
 }
 
+type AngularMeta struct {
+	Detected        bool `json:"detected"`
+	HideDeprecation bool `json:"hideDeprecation"`
+}
+
 // JSONData represents the plugin's plugin.json
 type JSONData struct {
 	// Common settings