Core: Add loki/logproto dependency (#27124)

* Add grafana/loki dependency and update its dependencies

* Update grpcplugin log_wrapper to implement the latest version of hclog.Logger

* Remove panic handling + test case no longer needed since the source of panics (bug) was fixed

pkg/extensions/main.go

@@ -8,6 +8,7 @@ import (
 	_ "github.com/gobwas/glob"
 	"github.com/grafana/grafana/pkg/registry"
 	"github.com/grafana/grafana/pkg/services/licensing"
+	_ "github.com/grafana/loki/pkg/logproto"
 	_ "github.com/jung-kurt/gofpdf"
 	_ "github.com/linkedin/goavro/v2"
 	_ "github.com/pkg/errors"