Valparse

Added documentation, enhanced tests, and fixed some bugs

Highlights
* Docs by tzussman in https://github.com/tzussman/valparse/pull/13
* Add tests by basseches in https://github.com/tzussman/valparse/pull/19
* Remove duplicate setup.py info by tzussman in https://github.com/tzussman/valparse/pull/20
* String formatting fixes by tzussman in https://github.com/tzussman/valparse/pull/21
* Print obj in createRawText even if fun exists by tzussman in https://github.com/tzussman/valparse/pull/22

**Full Changelog**: https://github.com/tzussman/valparse/compare/v0.2.0...v0.2.1

* Unify vgerror.py and parser.py into valparse.py -- these were previously separated for no clear reason.
* Add testing and CI setup, along with dependabot and CodeQL support

What's Changed

**Full Changelog**: https://github.com/tzussman/valparse/compare/v0.1...v0.2.0

Initial functional release