init framework

demo/template/runtime/runtime_loader.js

@@ -0,0 +1,8 @@
+require("launcher/native_require.js");
+
+egret_native.egtMain = function () {
+    egret_native.nativeType = "runtime";
+
+    egret_native.egretInit();
+    egret_native.egretStart();
+};