feat(resource): load callbacks

Load lib.callback for internal use.

resource/main.lua

@@ -1,5 +1,6 @@
 lib = setmetatable({
-	name = 'ox_lib'
+	name = 'ox_lib',
+	context = IsDuplicityVersion() and 'server' or 'client',
 }, {
 	__newindex = function(self, name, fn)
 		exports(name, fn)
@@ -7,6 +8,10 @@ lib = setmetatable({
 	end
 })
 
+cache = {
+	resource = lib.name
+}
+
 if not LoadResourceFile(lib.name, 'web/build/index.html') then
 	error('Unable to load UI. Build ox_lib or download the latest release.\n	^3https://github.com/overextended/ox_lib/releases/latest/download/ox_lib.zip^0')
 end