Update and extend governance [WIP] (#4980)

* updated governance proposal

* address feedback and todos

* add team members and voting processes

* Apply suggestions from code review

Co-authored-by: Thomas Wiecki <thomas.wiecki@gmail.com>

* Apply suggestions from code review

Co-authored-by: Ravin Kumar <ravinsdrive@gmail.com>

* Apply suggestions from code review

Co-authored-by: Michael Osthege <michael.osthege@outlook.com>

* Update GOVERNANCE.md

Co-authored-by: Michael Osthege <michael.osthege@outlook.com>

* adress comments

* proofreading

Co-authored-by: Thomas Wiecki <thomas.wiecki@gmail.com>
Co-authored-by: Ravin Kumar <ravinsdrive@gmail.com>
Co-authored-by: Michael Osthege <michael.osthege@outlook.com>

Author: 4 people