add `ngit repo` subcommand group

- `ngit repo` (no subcommand): show repository info including maintainer
  tree, per-maintainer infrastructure attribution, and a note explaining
  the union-vs-personal field model and recursive maintainer sets
- `ngit repo init`: alias for `ngit init`
- `ngit repo edit`: same as init but signals intent to update an existing
  repository announcement
- `ngit repo accept`: scoped command for co-maintainers to publish their
  announcement; errors with clear messages for all other states (trusted
  maintainer, already accepted, not invited, no repo found)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/bin/ngit/sub_commands/mod.rs b/src/bin/ngit/sub_commands/mod.rs
index 6b94248..d132240 100644
--- a/src/bin/ngit/sub_commands/mod.rs
+++ b/src/bin/ngit/sub_commands/mod.rs
@@ -6,5 +6,6 @@ pub mod init;
 pub mod list;
 pub mod login;
 pub mod logout;
+pub mod repo;
 pub mod send;
 pub mod sync;