Init go && Migrate metrics package

Signed-off-by: Zemtsov Vladimir <vl.zemtsov@gmail.com>

go.mod

@@ -1,3 +1,20 @@
-module github.com/vzemtsov/config-reloared
+module github.com/vzemtsov/config-reloader
 
 go 1.19
+
+require (
+	github.com/fsnotify/fsnotify v1.5.4
+	github.com/prometheus/client_golang v1.13.0
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+)