replace lua-mode step 1
Squashed 'packages/lua-mode/' content from commit 9d86a22

git-subtree-dir: packages/lua-mode
git-subtree-split: 9d86a227d1072b801cb14358b92ead853757180d
Merge commit '89219e28f93630948240e8323b80020d9f807c9d' as 'packages/lua-mode'
imenu support local function temporary solution