feat!: fine tune user interface

[xiaoshihou514]

This pr fine tunes the user interface according to nvim-best-practices

• use Guard + subcommands instead of multiple individual commands
• remove / deprecate the setup function, ft(...):fmt should work immediately
• finer typing for ft(...):fmt, ft(...):lint, etc. HARD, maybe later
• versioning with luarocks-tag-release
• remove some of the vim.validate calls for perf
• issue templates from haskell-tools.nvim
• allow formatter to be a function that returns the table
• print stderr on fail (reason?)

[xiaoshihou514]

@glepnir I think you would have to add some repo secrets as instructed here

[xiaoshihou514]

It seems like vim.fn.executable may return 1 for tools that are installed by mason but not in PATH, I added a check for this in lua/guard/health.lua.

[glepnir]

also create a .luarc.json file for luals config.

[glepnir]

thinking about create a floating window to show the all config of user defined and config for current buffer. like lspinfo we can call guard info or something else.

[xiaoshihou514]

thinking about create a floating window to show the all config of user defined and config for current buffer. like lspinfo we can call guard info or something else.

I went for just printing, though that would be nice.

[glepnir]

yup. but no rush. can in the subsequent PR

[xiaoshihou514]

Added info in floating markdown window :)