feat: Add investigations app backend (#98084)

* add initial structure for investigations app backedn

* update version

* Fix codegen & paths

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Fix Go workspace and CODEOWNERS

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* update kinds for investigation

* update dockerfile

* update codeowners

* update dependabot

* update golangci

* add investigation app and watcher

* run make update-workspace

* run make update-workspace

* register investigation app

* add investigation app to wireset

* add investigations app provider to api initializer

* fix imports

* update feature toggle

* fix cue definition and api initializer

* clean up removing unecessary components

* remove watcher feature toggle

* add investigations backend behind feature toggle

* revert change

---------

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>
Co-authored-by: Igor Suleymanov <igor.suleymanov@grafana.com>

pkg/services/store/testdata/public_testdata.golden.jsonc

@@ -21,8 +21,8 @@
 //  | example-with-style.geojson | application/geo+json | 3332          |
 //  | usa-states.geojson         | application/geo+json | 89263         |
 //  +----------------------------+----------------------+---------------+
-//  
-//  
+//
+//
 //  🌟 This was machine generated.  Do not edit. 🌟
 {
   "status": 200,
@@ -87,4 +87,5 @@
       }
     }
   ]
-}
+}
+