Add support for inline hooks

[blu-dev]

Resolves #1 Resolves #3

Introduces inline hooks to the exlaunch environment.

Modified:

• exl::util::Hook
  • Added two new static members for inline hook environment manage (s_InlineHookJit, s_UsedInlineHooks)
  • Added three new static methods:
    • void InlineHook(uinptr_t hook, uintptr_t callback, bool is_extended)
      • hook - The address where the hook should be injected
      • callback - The address of the callback function (must take either ExInlineCtx* or InlineCtx*)
      • is_extended - Needs to be true if the callback takes ExInlineCtx*
    • void InlineHook(uintptr_t hook, ExInlineCallback callback), a wrapper for the less user-friendly InlineHook
    • void InlineHook(uintptr_t hook, InlineCallback callback), a wrapper for the less user-friendly InlineHook
  • Modified the (so far) unused InlineCtx structure to reflect the x29 and x30 registers which are also stored there
  • Added a new ExInlineCtx structure which includes a field for the stack pointer as well as an array of 32 FpuRegister, and all elements in InlineCtx
  • Added a new FpuRegister union which holds representations of A64's SIMD registers
  • Modified Hook::Initialize to also initialize the new inline hook environment members
  • Changed InlineHookHandlerSize from 0x9C -> 0xC to reflect the actual size of the handler
  • Removed what was going to be the InlineHandler imports and replaced them by three new extern "C" imports
• exl::hook
  • Added four new static functions to help create inline hooks from either function pointers or main offsets
• __virtmem_rng
  • Added a static counter that is multiplied against the tick to ensure consecutive calls of __virtmem_rng can succeed Example output of dumping the extended context from a callback. This callback was run at the beginning of Smash Ultimate's CameraManager::update function and the game continued normal execution afterwards

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[jonahnm]

Looking forward to seeing this merged!