New site: detail different levels of supported

[SeanTAllen]

Unclear in the IA where this would go but the core team recently agreed to this.
We think its very important for transparency.

---

"supported platforms"

We say FreeBSD is but we don't test on it. We say ARM is, but we don't test on it. We say many Linux are but we don't test on them.

Going forward, we are going to clearly distinguish between different levels of support.

-- Fully supported

We run this on CI and don't expect bugs to sneak through. This is a combo of OS/Distro, compiler and llvm version. Pony team will aim fix all reproduce-able bugs if possible.

-- Partial support

We expect that things should work for this but it isn't fully covered under "Fully supported". We don't expect bugs but its possible due to a general lack of coverage. Pony team will probably need support from reporting user in order to address any bugs if the bug isn't present on "fully supported" platforms

-- It should work

We expect that bugs will be introduced and found by members of the community. Examples here are FreeBSD and anything running on ARM. Pony team will need support from the reporting user to address any bugs if the bug isn't present on a "fully supported" platform.