DOCUMENT: 2022 Internal Standards, Policies & Templates Updates

We need to update our internal community standards, repo policies, and related templates for 2022. Especially given new Internship projects.

This includes:

* When you want to move a project to BC
* When? Why? (Why Not?)
* CLA Requirements
* README.md Standardization

* Standardize repo issue tag name, descripts, and colors (update all and put in security-template).

* More detail on versioning, releases, git branch strategies:
* Examples:
* https://github.com/bitcoindevkit/bdk/blob/master/DEVELOPMENT_CYCLE.md

* Adapt [CII Best Practices](https://github.com/rsp/cii-best-practices-badge/blob/master/doc/criteria.md) for our needs, identify key ones to try to document and achieve, and begin practice.
* Do we want to strive to badge? https://github.com/rsp/cii-best-practices-badge

Some of these might make good intern projects.