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/PSVita/Iggy/gdraw/gdraw_psp2.h

@@ -68,7 +68,7 @@ IDOC extern int gdraw_psp2_SetResourceMemory(gdraw_psp2_resourcetype type, S32 n
    mapped to the GPU and *writeable*. If it isn't, the GPU will crash during
    either this function or CreateContext!
 
-   Pass in NULL for "ptr" and zero "num_bytes" to free the memory allocated to
+   Pass in nullptr for "ptr" and zero "num_bytes" to free the memory allocated to
    a specific pool.
 
    GDraw can run into cases where resource memory gets fragmented; we defragment
@@ -121,7 +121,7 @@ IDOC extern GDrawFunctions * gdraw_psp2_CreateContext(SceGxmShaderPatcher *shade
    be valid for as long as a GDraw context is alive.
 
    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_psp2_DestroyContext(void);
 /* Destroys the current GDraw context, if any.