Both D400 and D415 error messages with --select ALL

[DimitriPapadopoulos]

When selecting ALL rules or just D400 and D415, D415 should take precedence over D400 (or the reverse?) so that ruff prints a single error message instead of two messages:

• """Documentation"""

• $ ruff --isolated --select D400,D415 /path/to/file.py
  /path/to/file.py:1:1: D400 First line should end with a period
  /path/to/file.py:1:1: D415 First line should end with a period, question mark, or exclamation point
  Found 2 errors.
  No fixes available (2 hidden fixes can be enabled with the `--unsafe-fixes` option).
  $ 
  

• $ ruff --version
  ruff 0.1.3
  $ 
  

[charliermarsh]

I agree this is non-ideal, but making rules dependent on whether other rules are enabled causes problems and breaks some assumptions within Ruff. For example, if you have # noqa: D415 on that line, but then run ruff check --select D400, D400 would now be triggered instead of D415 (since D415 isn't active), and the violation would be raised. If you added a # noqa: D400, D415, then the # noqa: D400 portion would appear unused and get flagged as an unused # noqa.

I think I'd prefer to solve this via rule recategorization. Like, this seems more appropriate as a setting on the rule than as two separate rules.

[zanieb]

Let's group this into #1774