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/PSVitaExtras/PSVitaStrings.cpp

@@ -15,7 +15,7 @@ uint8_t *mallocAndCreateUTF8ArrayFromString(int iID)
 	if( result != S_OK ) 
 	{
 		app.DebugPrintf("sceCesUcsContextInit failed\n");
-		return NULL;
+		return nullptr;
 	}
 
 	uint32_t utf16Len;
@@ -44,7 +44,7 @@ uint8_t *mallocAndCreateUTF8ArrayFromString(int iID)
 	if( result != SCE_OK ) 
 	{
 		app.DebugPrintf("sceCesUtf16StrToUtf8Str: conversion error : 0x%x\n", result);
-		return NULL;
+		return nullptr;
 	}
 
 	return strUtf8;