[Enhancement] Maintain config.ron, Add Haskell

[kevinmatthes]

This Pull Request fixes typos in the comments, adds comment banners and introduces a Tree-Sitter for Haskell.

[mcobzarenco]

Thank you for this, super useful! Adding Haskell was on my todo list too! 🙇

Not a big fan of comment boxes, see below. I had one other meta-comment re: splitting changes into multiple commits / PRs. E.g. would be easy to just merge Haskell addition and discuss style changes in a separate PR -- obviously there's a balance, but stylistic things are prone to bike shedding :-)

[mcobzarenco]

Looks good to me, thanks! Please squash the 2nd commit and I'll merge it.

EDIT: @kevinmatthes Could you also add a line in the changelog please referencing the newly added support for Haskell 🎉

[kevinmatthes]

Squashing will cause problems with the base branch which need to be resolved. The newly added changelog line will not be accepted and the configuration will be damaged. Squashing these three commits into one is not possible, at least not for me.

You can also choose to merge by squash in order to solve the problem of multiple commits.

[kevinmatthes]

I support @iainh's #68 and would like to wait for the results of that Pull Request before continuing with this one.

[mcobzarenco]

On the git point,

Squashing will cause problems with the base branch which need to be resolved. The newly added changelog line will not be accepted and the configuration will be damaged. Squashing these three commits into one is not possible, at least not for me.

You should checkout latest master and git rebase interactive this branch on it, i.e git rebase -i. This will allow you to squash the commits into one, edit their messages etc.

[mcobzarenco]

I've created a squashed version #75 -- I may merge that one (you still appear as the author in the commit)

I support @iainh's #68 and would like to wait for the results of that Pull Request before continuing with this one.

I honestly don't see any reason to wait for as that's a major change as there's immediate value in merging this PR -- better documentation and support for Haskell 🎉

[mcobzarenco]

Merged in #75