Harmonize help commands' `--format` to `--output-format` with deprecation warnings (#8203)
## Summary
Since `--format` was changed to `--output-format` for `check`, it feels
like it makes sense for the same to work for the auxiliary commands.
This
* adds the same deprecation warning that used to be a thing in #7514
(and un-became a thing in #7984)
Fixes #7990.
## Test Plan
* `cargo run --bin=ruff -- rule --all --output-format=json` works
* `cargo run --bin=ruff -- rule --format=json` works with warnings