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/Orbis/Orbis_UIController.cpp

@@ -182,7 +182,7 @@ void ConsoleUIController::render()
 	throttle++;
 
 #else
-	gdraw_orbis_End(NULL);
+	gdraw_orbis_End(nullptr);
 #endif
 
 #endif
@@ -252,7 +252,7 @@ GDrawTexture *ConsoleUIController::getSubstitutionTexture(int textureId)
 	GDrawTexture *gdrawTex = gdraw_orbis_WrappedTextureCreate(tex);
 	return gdrawTex;
 
-	return NULL;
+	return nullptr;
 }
 
 void ConsoleUIController::destroySubstitutionTexture(void *destroyCallBackData, GDrawTexture *handle)