Add 'modhelp.py' script (python2) to automate module testing and
module generation.
To build and test all modules in the modules/ dir
$ ./modhelp.py test
To generate a module from template code (good starting point)
$ ./modhelp init mynewtestmodule
See the script -h option for more documentation.
* modules/modhelp.py: New module helper script.
* modules/mod-test/Makefile: New file. Makefile for the test module.
* modules/mod-test/mod-test.c: New file. Test module source file.
* modules/mod-test/test.el: New file. ert test suite for the test module.
* modules/.gitignore: New file. Local .gitignore file.
Co-authored-by: Philipp Stephani <phst@google.com>
