Datasources: add new tab and feature toggle (#25663)

* Datasources: add insights tab

* Config: add feature flag

packages/grafana-data/src/types/config.ts

@@ -39,6 +39,7 @@ export interface FeatureToggles {
    * Available only in Grafana Enterprise
    */
   meta: boolean;
+  datasourceInsights: boolean;
 }
 
 /**

packages/grafana-runtime/src/config.ts

@@ -53,6 +53,7 @@ export class GrafanaBootConfig implements GrafanaConfig {
     expressions: false,
     newEdit: false,
     meta: false,
+    datasourceInsights: false,
   };
   licenseInfo: LicenseInfo = {} as LicenseInfo;
   rendererAvailable = false;