Merging utility scripts into a root Makefile

[Thesola10]

This is a tentative change which removes a few of the shell scripts at the repo root, by merging them into a single Makefile.

Feedback is welcome!

[github-actions]

Thanks for your contribution! We don't accept pull requests to the release branch. I have rebased your pull request onto develop, check for any conflicts.

[jtaala]

Looks good. Would just need a quick update to the README.md and will be good to go.

I've update the README.md.

Nice work @Thesola10!

[jtaala]

Tested functions.

Install and generating zip works well!

Uninstall did work, but I did get an error there:

[jay@m16 pwm]$ make uninstall
GNOME_EXT_DISABLE	 paperwm@paperwm.github.com
/bin/sh: -c: line 6: syntax error: unexpected end of file
make: *** [Makefile:68: uninstall] Error 2

I updated README.md.

[smichel17]

Personally I like:

• Make a scripts folder for all the scripts
• Add a Makefile with a bunch of .PHONY targets to invoke the scripts
  • (Once it's packaged in enough distros, I'll probably move from make to just for this)

That way,

• The scripts don't clutter the root folder.
• People without make installed can still invoke the scripts easily / we don't need to install make in CI.
• People who use make get tab autocompletion.
• We get the social value of using a widespread tool. e.g. when a newcomer sees a Makefile, they probably know they can look in there and it'll kinda double as build documentation.