Scuemata: Add grafana-cli command to validate basic scuemata (#33523)

* Add grafana-cli command to validate basic scuemata

* Fix c/p outdated message

* Fix linting - naming

* Add basic testing

* Add cue schema validation

* Add tests

* Fix linting errors

* Remove code - refactored tests

* Remove unnecessary files - leftovers

* Fix linting

* Try adding public folder in testdata

pkg/schema/load/common.go

@@ -8,6 +8,7 @@ import (
 
 	"cuelang.org/go/cue"
 	"cuelang.org/go/cue/load"
+	"github.com/grafana/grafana"
 )
 
 var rt = &cue.Runtime{}
@@ -39,6 +40,13 @@ type BaseLoadPaths struct {
 	InstanceCueFS fs.FS
 }
 
+func GetDefaultLoadPaths() BaseLoadPaths {
+	return BaseLoadPaths{
+		BaseCueFS:       grafana.CoreSchema,
+		DistPluginCueFS: grafana.PluginSchema,
+	}
+}
+
 // toOverlay converts all .cue files in the fs.FS into Source entries in an
 // overlay map, as expected by load.Config.
 //