Query Caching: Add per-panel query caching TTL (#61968)

* *Create Caching Config interface and OSS impl
*Create front-end facing DS Cache config
*Populate Caching Config on Datasource DTO
*Update OSS wire deps

* fix unit test

* handle query caching TTL override on the frontend

* Make sure the override works with pubdash

* move caching config to the right place in the ds info

* move caching config logic to enterprise index hook

* move queryCachingTTL to pubdash query payload

* Remove  from metadata (not needed)

* rename struct and add comment

* remove invalid wire dependency

* manual revert of 395c74b

* fix frontend test

* fix backend test

* fix tests for real this time

* truly fix frontend test

* fix back end unit test for real

public/app/angular/panel/metrics_panel_ctrl.ts

@@ -203,6 +203,7 @@ class MetricsPanelCtrl extends PanelCtrl {
       publicDashboardAccessToken: this.dashboard.meta.publicDashboardAccessToken,
       scopedVars: panel.scopedVars,
       cacheTimeout: panel.cacheTimeout,
+      queryCachingTTL: panel.queryCachingTTL,
       transformations: panel.transformations,
     });
   }