feat: nvgpu tool for tweaking nvidia gpu driver settings

An open source re-implementation of the “NvDisplayConfigLDJ"
tool with additional enhancements.

This can be used to tweak your nvidia GPU driver settings to
create custom display timings to address IIDX’s requirement
if expecting proper display timings. This can also be used for
any legacy IIDX versions that even expect very specific display
timings, e.g. 59.95 or 60.05 hz.

Furthermore, creating application profiles allows further tweaks
to important GPU settings such as the current performance mode
setting. This is crucial to ensure the GPU is not going into any
kind of power saving states which results in non-smooth
scrolling during gameplay and micro stuttering that cannot
be measured on application level.
Summary:

Test Plan:

README.md

@@ -122,6 +122,7 @@ The following games are supported with their corresponding hook-libraries.
 - ir-beat-patch-9/10: Patch the IR beat phase on IIDX 9 and 10
 - [mempatch-hook](doc/tools/mempatch-hook.md): Patch raw memory locations in the target process
   based on the provided configuration
+- [nvgpu](doc/tools/nvgpu.md): Command line tool to configure and tweak the NVIDIA GPU driver
 - [pcbidgen](doc/tools/pcbidgen.md): Konami PCBID generator tool
 - [ViGEm clients](doc/vigem/README.md): Expose BT5 APIs as XBOX game controllers to play any games
   with real cabinet hardware.