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/api/frontendsettings_test.go

@@ -295,7 +295,7 @@ func TestHTTPServer_GetFrontendSettings_apps(t *testing.T) {
 								Type:    plugins.TypeApp,
 								Preload: true,
 							},
-							AngularDetected: true,
+							Angular: plugins.AngularMeta{Detected: true},
 						},
 					},
 				}
@@ -308,11 +308,11 @@ func TestHTTPServer_GetFrontendSettings_apps(t *testing.T) {
 			expected: settings{
 				Apps: map[string]*plugins.AppDTO{
 					"test-app": {
-						ID:              "test-app",
-						Preload:         true,
-						Path:            "/test-app/module.js",
-						Version:         "0.5.0",
-						AngularDetected: true,
+						ID:      "test-app",
+						Preload: true,
+						Path:    "/test-app/module.js",
+						Version: "0.5.0",
+						Angular: plugins.AngularMeta{Detected: true},
 					},
 				},
 			},