List previous Rust on GPU initatives and related projects

[repi]

We talked in the meeting today (#15) that it would be good to list out all previous related Rust GPU initiatives and projects in the README, and maybe a bit how they relate or differ from the approach(es) we are taking here.

Could put them under a "Previous Work and Related Projects" section

• 2013 - Experimental Rust PTX compute backend on Nvidia GPU
  • @pcwalton do you have any more links or info about it?
• 2018 - Accel
• 2019 - RLSL by @MaikKlein. This we do mention in the README, but can compare more

Likely more?

[Jasper-Bekkers]

rust-lang/rust#38789

[msiglreith]

I have a few more for the archives:

• 2016: glassfull syntax plugin/macro to translate to GLSL
• 2017: inspirv my MIR -> SPIR-V compiler experiments

[ColeSeverson]

Is this change still wanted/needed? I would be happy to take it up as I familiarize myself with the project,

[repi]

sure! Imagining a pretty brief README section with like a one-liner for each related project in chronological order, or something like that

[ColeSeverson]

Created a PR for this change: #794