feat: Support LuaCATS comment formatting

[UtkarshVerma]

LuaCATS offers a way to specify the types through comments. Currently, stylua does not format it. For example, the code below:

---@param server string
---@param cond fun( root_dir, config): boolean
function M.disable(server, cond) end

should be formatted as:

---@param server string
---@param cond fun(root_dir, config): boolean
function M.disable(server, cond) end

[JohnnyMorganz]

It will be somewhat difficult to support this. We currently don't bother formatting comments at all, since comments could consist of anything.

We could support formatting specifically doc comments, however there is no "standardised" way of defining documentation comments in Lua (luadoc, emmylua, LuaCATs, moonwave, etc.), so it isn't clear which one, if any, we should support.

[lewis6991]

At the very minimum, we could enforce consistent whitespace in doc comments:

---text1
--- text2
--- @param a
---@return string

becomes:

--- text1
--- text2
--- @param a
--- @return string

Where the padding maybe configurable.