Include self hosted coverage and code analysis tools

Inspired by:
https://github.com/openmrslab/suspect
One would like to be transparent about:
- [ ] Build status (WIP)
- [ ] Code coverage
- [ ] Maintainability
- [ ] ...
To self-host these tools, one can look into equivalents of:
- https://coveralls.io/ or codecov.io
at: [uncov](https://github.com/xaizek/uncov) and check if it supports Bash additional alternatives may be listed [here](https://www.reddit.com/r/selfhosted/comments/5h2orm/selfhosted_version_of_coveralls/) or one can look into the self-hosted enterprise version of coverals [as mentioned in their docs](https://readthedocs.org/projects/coveralls-python/downloads/pdf/latest/).
- Code Climate
No open source self-hosted alternatives are found, however it currently seems to be possible to apply it to your own open source GitHub repositories for free.

No source file or test is named. Start by inspecting the install flow and deciding which self-hosted coverage and code-analysis tools are supported for Bash; done would require a defined tool list, integration scope, and validation approach.

Written by the indexing model from the issue text.