feat(ft): added mojo and metalua support (#434)

add support for mojo, same as the python one :)

Author: neo451

lua/Comment/ft.lua

@@ -109,12 +109,14 @@ local L = setmetatable({
     lilypond = { M.latex, '%{%s%}' },
     lisp = { M.lisp_l, M.lisp_b },
     lua = { M.dash, M.dash_bracket },
+    metalua = { M.dash, M.dash_bracket },
     luau = { M.dash, M.dash_bracket },
     markdown = { M.html, M.html },
     make = { M.hash },
     mbsyncrc = { M.dbl_hash },
     mermaid = { '%%%s' },
     meson = { M.hash },
+    mojo = { M.hash },
     nextflow = { M.cxx_l, M.cxx_b },
     nim = { M.hash, '#[%s]#' },
     nix = { M.hash, M.cxx_b },