[OSPP] Task - Implement CHAOSS Metrics

[xiaoya-yaya]

There are 16 CHAOSS metrics related to Project Evolution. During OSPP, we wish to implement some of them.

Code Development Activity

• [x] Code Changes Commits #578
• [ ] Code Changes Lines #579

Code Development Efficiency

• [x] Change Requests Accepted #581
• [x] Change Requests Declined #582
• [ ] Change Request Duration #583
• [ ] Change Request Acceptance Ratio #584

Issue Resolution

• [x] Issues New #585
• [x] Issues Closed #587
• [ ] Issue Age #588
• [ ] Issues Active #586
• [ ] Issue Response Time #589
• [x] Issue Resolution Duration #590

Community Growth

• [ ] Contribution Attribution - we don't have an issue yet, but this can be implemented using email suffix.
• [ ] New Contributors #592
• [ ] Inactive Contributors #591
• [ ] New Contributors Closing Issues #593

[xiaoya-yaya]

Bus Factor is a metric related to Risk, but its important to observe a project's decline:

• [x] Bus Factor #594

Refer to a tentative metric model for more.

[xiaoya-yaya]

Please comment /self-assign under corresponding metric issues that you plan to implement, thus other people won't duplicate the implementation. @longyanz

[frank-zsy]

The contributor attribution metric is implemented as contributor email suffixes metric in #1159 , close this issue for now, if we have more data in the future, we can open new issues to implement this metric. @xiaoya-yaya

[xgdyp]

That‘s awesome！