Adopt an open governance model (#3183)

* Adopt an open governance model

* Update GOVERNANCE.md

Co-authored-by: Adam Harvey <adam.harvey@dxc.com>

* Update MAINTAINERS.md

Co-authored-by: Oliver Sand <oliver.sand@sda-se.com>

* Update GOVERNANCE.md

Co-authored-by: Andrew Thauer <6507159+andrewthauer@users.noreply.github.com>

Co-authored-by: Adam Harvey <adam.harvey@dxc.com>
Co-authored-by: Oliver Sand <oliver.sand@sda-se.com>
Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Andrew Thauer <6507159+andrewthauer@users.noreply.github.com>

.github/styles/vocab.txt

@@ -91,6 +91,7 @@ learnings
 lerna
 Lerna
 magiclink
+Maintainership
 mailto
 Malus
 md

GOVERNANCE.md

@@ -0,0 +1,52 @@
+# Backstage Governance
+
+This document defines project governance for the project.
+
+## Maintainers
+
+Backstage Maintainers have write access to the Backstage GitHub repository https://github.com/backstage/backstage. The current maintainers can be found in [MAINTAINERS](MAINTAINERS.md).
+
+This privilege is granted with some expectation of responsibility: maintainers are people who care about the Backstage project and want to help it grow and improve. A maintainer is not just someone who can make changes, but someone who has demonstrated his or her ability to collaborate with the team, get the most knowledgeable people to review code, contribute high-quality code, and follow through to fix issues (in code or tests).
+
+A maintainer is a contributor to the Backstage project's success and a citizen helping the project succeed.
+
+## Becoming a Maintainer
+
+To become a maintainer you need to demonstrate the following:
+
+- commitment to the project
+  - participate in discussions, contributions, code reviews for 3 months or more,
+  - perform code reviews for 10 non-trivial pull requests,
+  - contribute 10 non-trivial pull requests and have them merged into master,
+- ability to write good code,
+- ability to collaborate with the team,
+- understanding of how the team works (policies, processes for testing and code review, etc),
+- understanding of the project's code base and coding style.
+
+## Changes in Maintainership
+
+A new maintainer must be proposed by an existing maintainer by opening an issue (with title `Maintainer Nomination`) to the Backstage GitHub repository (https://github.com/backstage/backstage) containing the following information:
+
+- nominee's first and last name,
+- nominee's email address and GitHub user name,
+- an explanation of why the nominee should be a maintainer,
+- a list of links to non-trivial pull requests (top 10) authored by the nominee.
+
+Maintainers can be removed by a 2/3 majority vote.
+
+## Approving PRs
+
+PRs may be merged after receiving at least one approval from a maintainer.
+
+## GitHub Project Administration
+
+Maintainers will be added to the collaborators list of the Backstage repository with "Write" access.
+
+## Changes in Governance
+
+All changes in Governance require a 2/3 majority vote.
+
+## Other Changes
+
+Unless specified above, all other changes to the project require a 2/3 majority vote.
+Additionally, any maintainer may request that any change require a 2/3 majority vote.

MAINTAINERS.md

@@ -0,0 +1,21 @@
+# Maintainers
+
+- See [CONTRIBUTING.md](CONTRIBUTING.md) for general contribution guidelines.
+
+## Current Maintainers 🏓
+
+- Stefan Ålund - Spotify (GitHub: @stefanalund, Discord: @stalund)
+- Patrik Oldsberg - Spotify (GitHub: @Rugvip, Discord: @Rugvip)
+- Fredrik Adelöw - Spotify (GitHub: @freben, Discord: @freben)
+- Ben Lambert - Spotify (GitHub: @benjdlambert, Discord: @blam)
+
+## Plugin maintainers 🧩
+
+Teams and individuals that maintain a plugin (or another non-core module of the code) can get write access to that part of the repo using CODEOWNERS.
+
+## Hall of Fame 👏
+
+People that have made significant contributions to the project and earned write access:
+
+- Andrew Thauer - Wealthsimple (GitHub: @andrewthauer)
+- Oliver Sand - SDA SE (GitHub: @Fox32)

OWNERS.md

@@ -1,19 +0,0 @@
-# Owners
-
-- See [CONTRIBUTING.md](CONTRIBUTING.md) for general contribution guidelines.
-
-## Maintainers 🏓
-
-- Patrik Oldsberg (@Rugvip, Spotify)
-- Fredrik Adelöw (@freben, Spotify)
-- Raghunandan Balachandran (@soapraj, Spotify)
-- Ben Lambert (@benjdlambert, Spotify)
-- Marcus Eide (@marcuseide, Spotify)
-- Niklas Ek (@nikek, Spotify)
-- Stefan Ålund (@stefanalund, Spotify)
-- Kat Zhou (@katz95, Spotify)
-
-## Hall of Fame 👏
-
-- Andrew Thauer (@andrewthauer, Wealthsimple)
-- Oliver Sand (@Fox32, SDA-SE)