refactor foundry lib structure; add transport classes for db,http,websocket; add action interface instead of multiple function that accepts action classes; add changing foundry status on websocket responses

internal/foundry/transport/errors.go

@@ -0,0 +1,11 @@
+package transport
+
+import "errors"
+
+var (
+	ErrorNotAuth           = errors.New("Admin is not authenticated")
+	ErrorIsNotReady        = errors.New("Connection is not ready for communication")
+	ErrorTimeout           = errors.New("Answer has not been received after timeout")
+	ErrorStateTypeNotExist = errors.New("State type does not exists")
+	ErrorAuthPassWrong     = errors.New("Authentication password is wrong")
+)