Add build to ghc-8.10.2 and windows

[jneira]

• leveraging @mistuke work in chocolatey (thanks again)
• follow up of Enable ghc-8.10.2 for windows #617
• testing build in my repo: https://github.com/jneira/haskell-language-server/actions/runs/380677453
• it lets us to not have to build locally this version Attach windows binaries for ghc 8.8.4 #276

[ndmitchell]

Instead of including this via exclude, why not use include: {os: windows, ghc: 8.10.2.2} and not put it in the matrix of GHC versions. That's what I'm doing in my projects.

[jneira]

• build: https://github.com/jneira/haskell-language-server/actions/runs/380677453

[jneira]

We could take ride of other exclusions and use only inclusions but i somewhat like add explicitly cause we cant use those versions for windows (although the may be improved linking concrete issues f.e.)

[ndmitchell]

The other exclusions have information, so happy to have them around. The inclusion of a version that doesn't really exist is a bit different though, so I think include of 8.10.2.2 but exclude of others makes sense. But I'm not overly fussed.