chore: remove sqlstore & mockstore dependencies from (most) packages (#57087)

* chore: add alias for InitTestDB and Session

Adds an alias for the sqlstore InitTestDB and Session, and updates tests using these to reduce dependencies on the sqlstore.Store.

* next pass of removing sqlstore imports
* last little bit
* remove mockstore where possible

pkg/services/live/database/tests/setup.go

@@ -4,15 +4,15 @@ import (
 	"testing"
 	"time"
 
+	"github.com/grafana/grafana/pkg/infra/db"
 	"github.com/grafana/grafana/pkg/infra/localcache"
 	"github.com/grafana/grafana/pkg/services/live/database"
-	"github.com/grafana/grafana/pkg/services/sqlstore"
 )
 
 // SetupTestStorage initializes a storage to used by the integration tests.
 // This is required to properly register and execute migrations.
 func SetupTestStorage(t *testing.T) *database.Storage {
-	sqlStore := sqlstore.InitTestDB(t)
+	sqlStore := db.InitTestDB(t)
 	localCache := localcache.New(time.Hour, time.Hour)
 	return database.NewStorage(sqlStore, localCache)
 }