Project structure refactor:

- Change package name general_server to gateway
- Changing the structure of directories and packages
- Adding vendor to the project

vendor/github.com/yuin/gopher-lua/ast/misc.go

@@ -0,0 +1,17 @@
+package ast
+
+type Field struct {
+	Key   Expr
+	Value Expr
+}
+
+type ParList struct {
+	HasVargs bool
+	Names    []string
+}
+
+type FuncName struct {
+	Func     Expr
+	Receiver Expr
+	Method   string
+}