chaoss metrics: Collaboration Development Index

[mpadge]

https://chaoss.community/kb/metrics-model-collaboration-development-index/

• [x] Contributors
• [x] Downloads
• [x] Code Changes Commits
• [x] CI Test
• [x] Code Commit linked with Change Request
• [ ] Ratio of Issues to Change Requests
• [ ] Change Request Reviews
• [ ] Technical Fork
• [ ] Code Changes Lines

[mpadge]

Start with contributors and "Code Changes Commits". Contributors states:

Determine how many active change request creators, code reviewers, commit authors there are in the past 90 days.

while Code Changes Commits states,

How many changes were made to the source code during a specified period?

So first implement a package-level option of "githist_period = 90", then extract those two metrics.

[mpadge]

This commits implement the first 3 metrics.

[mpadge]

And those commits add the "CI test", which was more difficult than expected ...