Add support for BSPs - Build server protocols.

[dphaldes]

BSP is a new protocol created for communication with build servers similar to LSP https://build-server-protocol.github.io/.
There are a few BSP implementations already like one for gradle https://github.com/microsoft/build-server-for-gradle and others https://build-server-protocol.github.io/docs/overview/implementations.

It would be nice to have a category for it. There is an in dev plugin for it https://github.com/616b2f/bsp.nvim

[dphaldes]

I would be happy to contribute it if you give me an approval :)

[Conarius]

It's not that hard. You would just need to provide the package.yaml files for it and make a new category in the yaml schema (which can only be done by williamboman).
Might require some changes in williamboman/mason.nvim first, then the changes in the yaml schema. But packages can already be provided without much change.
The BSP Support within Neovim is another beast but that's out of scope for these projects here