Implement `repos.list` replacement
Created by: tsenart
Checklist:
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Add "OtherExternalServiceConnection" type to site.schema.json
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Document changes. -
Update Changelog. -
Add code to https://github.com/sourcegraph/sourcegraph/tree/master/cmd/repo-updater/repos to fetch repos for these other connections. -
Fix JSON schema Monaco editor validation (it doesn't seem to support dependencies
) -
Write a test plan
Closes #1550 (closed)