Modernize project codebase (#906)

* 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

* Add safety checks and fix a issue with vector going OOR

Minecraft.Client/PS3/Iggy/gdraw/gdraw_ps3gcm.h

@@ -108,7 +108,7 @@ IDOC extern GDrawFunctions * gdraw_GCM_CreateContext(CellGcmContextData *gcm, vo
    There can only be one GCM GDraw context active at any one time.
 
    If initialization fails for some reason (the main reason would be an out of memory condition),
-   NULL is returned. Otherwise, you can pass the return value to IggySetGDraw. */
+   nullptr is returned. Otherwise, you can pass the return value to IggySetGDraw. */
 
 IDOC extern void gdraw_GCM_DestroyContext(void);
 /* Destroys the current GDraw context, if any. */