Feat: Toggle diagnostics inside of files

[OXY2DEV]

Some LSP provide a way to disable their diagnostics. For example,

---@diagnostics disable

I think this would be a good feature to add to harper_ls as some files can easily create 1000s of warnings otherwise.

Proposed solution

Provide a way to disable the diagnostics on specific lines.

<!-- @harper disable -->
a line that doesn't start with a capital letter
<!-- @harper enable -->

Or something like

---@harper disable-next-line
---@param buf integer?
local function do_stuf (buf)
  -- Do something here
end

It might be a good idea to disable specific rules too.

// Ignores only capitalization warnings
// @harper disable capital

// Ignores spelling mistakes
// @harper disable spell

// Ignores too many spaces warning
// @harper disable whitespace

// Ignore warnings on lines that are too long
// @harper disable length