Add pre-commit as a runner for black

`pre-commit` provides an easy way for devs to never miss committing
code without running black, and an easy way to to invoke black from
CI. In the future we can use it to run codespell, and new-to-us
tools like flake8

Signed-off-by: Cole Robinson <crobinso@redhat.com>

.pre-commit-config.yaml

@@ -0,0 +1,10 @@
+repos:
+-    repo: https://github.com/pre-commit/pre-commit-hooks
+     rev: v5.0.0
+     hooks:
+     -    id: check-yaml
+
+-    repo: https://github.com/psf/black
+     rev: 25.1.0
+     hooks:
+     -    id: black