feat: add mh_style (#813)

* feat: add mh_style

* Fix description formatting in mh_style.lua

---------

Co-authored-by: Steven Arcangeli <506791+stevearc@users.noreply.github.com>

Author: Mintass

lua/conform/formatters/mh_style.lua

@@ -0,0 +1,11 @@
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/florianschanda/miss_hit",
+    description = "A simple coding style checker and code formatter for MATLAB or Octave code.",
+  },
+  command = "mh_style",
+  args = { "--fix", "$FILENAME" },
+  stdin = false,
+  exit_codes = { 0, 1 },
+}