Project modernization (#630)

* Fixed boats falling and a TP glitch #266

* Replaced every C-style cast with C++ ones

* Replaced every C-style cast with C++ ones

* Fixed boats falling and a TP glitch #266

* Updated NULL to nullptr and fixing some type issues

* Modernized and fixed a few bugs

- Replaced most instances of `NULL` with `nullptr`.
- Replaced most `shared_ptr(new ...)` with `make_shared`.
- Removed the `nullptr` macro as it was interfering with the actual nullptr keyword in some instances.

* Fixing more conflicts

* Replace int loops with size_t and start work on overrides

Minecraft.Client/PSVita/PSVita_UIController.cpp

@@ -145,7 +145,7 @@ void ConsoleUIController::render()
 
 	/* End the GXM scene. Note that we pass "notify" (returned from
 	$gdraw_psp2_End) as the fragment notification. */
-	//sceGxmEndScene(gxm, NULL, &notify);
+	//sceGxmEndScene(gxm, nullptr, &notify);
 	RenderManager.setFragmentNotification(notify);
 #endif
 }