Not really proud of this once since we are just improving a hack, but rendering this game efficiently is a challenge.

This does two things in MGA2:

• Set a max limit of commands to merge, avoiding the problem that happens at the oil slick (Metal Gear Acid 2 crash during oil slick animation with Vulkan renderer #20306 )
• Fixes the lack of scissor rectangle merging, which broke some graphical tricks

Additionally, throws in a natvis file so we can inspect FastVec<> in the debugger.