[Feature]: Document release steps

[rly]

What would you like to see added to the NWB GUIDE?

Useful for developers making a release.

1. Update switcher
2. Update version in package.json
3. Run all tests
4. Git tag new version, push to github
5. Run all tests
6. Deploy windows and mac releases
7. Inspect newly created github release, add changelog
8. Update linux branch

Do you have any interest in helping implement the feature?

Yes.

Code of Conduct

Yes

Did you confirm this feature was not already reported?

Yes