[Quest API] Add ClearAccountFlag() and GetAccountFlags() to Perl/Lua (#3469)

* [Quest API] Add ClearAccountFlag() and GetAccountFlags() to Perl/Lua

# Perl
- Add `$client->ClearAccountFlag(flag)`.
- Add `$client->GetAccountFlags()`.

# Lua
- Add `client:ClearAccountFlag(flag)`.
- Add `client:GetAccountFlags()`.

# Notes
- Made use of repositories and cleaned up existing code.

* Update lua_client.cpp

* Don't use auto.

zone/lua_object.cpp

@@ -173,7 +173,7 @@ luabind::object Lua_Object::GetEntityVariables(lua_State* L) {
 	if (d_) {
 		auto self = reinterpret_cast<NativeType*>(d_);
 		auto l = self->GetEntityVariables();
-		auto i = 1;
+		int i = 1;
 		for (const auto& v : l) {
 			t[i] = v;
 			i++;