feat(syntax): add support for Jule module files

Author: koibtw

ftdetect/jule.lua

@@ -8,6 +8,6 @@ vim.filetype.add({
         jule = "jule",
     },
     filename = {
-        ["jule.mod"] = "jule",
+        ["jule.mod"] = "julemod",
     },
 })

syntax/julemod.vim

@@ -0,0 +1,17 @@
+" Vim syntax file
+" Language:     Jule Module
+" Maintainer:   adam <me@adamperkowski.dev>
+" URL: https://github.com/julelang/jule.nvim
+" License: BSD 3-Clause
+
+if exists("b:current_syntax")
+  finish
+endif
+
+syntax keyword julemodKeyword module
+
+let b:current_syntax = "julemod"
+
+highlight default link julemodKeyword Keyword
+
+" vim: set et sw=4 sts=4 ts=8: