Add RVVM to RISC-V Ecosystem Landscape page

[X547]

I see TinyEMU "Design Tools+Compilers" section, so RVVM should fit too.

https://github.com/riscv-admin/riscv-landscape

[LekKit]

Thanks for the cool idea, although I guess we need a better logo that is clearly visible on white bg. I am not a designer and I've been asking ppl for ideas for a while now.

Will try to modify what we have to be more presentable and report here later

[LekKit]

So far I have 3 options:

• Adapt existing logo (the one from EFI splash and Makefile) to be properly visible on white bg and convert to SVG
• Throw away existing pixelated logo and make/order an entirely new future-proof branding
• Simply use a text logo as a lot projects over there do and not be нитакаякакфсе edgy

Option 1 kinda works (See below) but most people will regard it as ugly, imo (Even tho it does have some cool vibe when seen in EFI or Makefile, somehow).
So yeah I am kinda clueless and I hope more people will reach out and tell if they like this version or other options should be considered.

The version from Makefile (lighter):