added lokiwriter log, server logger setting function and some zerolog logs

server/logger.go

@@ -0,0 +1,12 @@
+package server
+
+import (
+	"github.com/rs/zerolog"
+)
+
+var logger zerolog.Logger
+
+// AddLogger sets the logger for the sublibrary
+func AddLogger(l zerolog.Logger) {
+	logger = l
+}