Lua file handler

[naivling]

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Link to redmine ticket:https://redmine.openinfosecfoundation.org/issues/6395

Describe changes:
I added the function handle_lua_rule_files, which obviously handles lua files shipped within a rule tarball.
It works nearly exactly the same as the existing functions handle_filehash_files and handle_dataset_files.
testing was done for nested and non nested archives, and for single and multiple occurances of lua and luajit keywords in rules.
It assumes the final outputdir is called "rules", but handle_filehash_files does the same, so this wont break setups not already broken.

[inashivb]

Hi @naivling !
Thank you for your first contribution to our project. :)
Could you please

1. Squash the commits
2. Make the commit message like other commits in the repo
3. Add ticket number to the commit
4. Assign ticket to yourself on redmine

[naivling]

Hi @inashivb
1 and 2 are done,
but I don't get, what you meant with

3. Add ticket number to the commit

Should I include it in the commit-message, or am I supposed to really commit the ticket number in some way?

Sorry for the trouble, its my first PR in any project.

[inashivb]

Hi @inashivb 1 and 2 are done, but I don't get, what you meant with

3. Add ticket number to the commit

Should I include it in the commit-message, or am I supposed to really commit the ticket number in some way?

Yes, please. In the commit message. Example: 9304746

Sorry for the trouble, its my first PR in any project.

No problem. :)

[naivling]

After applying the requested changes to a new branch, this PR is now superseded by a new one