* Update readme to mention .NET 7
* infra: Migrate to .NET 7
.NET 7 is still in preview but this prepare for the release coming up
next month.
* Use Random.Shared in CreateRandom
* Move UInt128Utils.cs to Ryujinx.Common project
* Fix inverted parameters in System.UInt128 constructor
* Fix Visual Studio complains on Ryujinx.Graphics.Vic
* time: Fix missing alignment enforcement in SystemClockContext
Fixes at least Smash
* time: Fix missing alignment enforcement in SteadyClockContext
Fix games (like recent version of Smash) using time shared memory
* Switch to .NET 7.0.100 release
* Enable Tiered PGO
* Ensure CreateId validity requirements are meet when doing random generation
Also enforce correct packing layout for other Mii structures.
This fix a Mario Kart 8 crashes related to the default Miis.
