feat(dev-docs): Add LOGAF scale to code review (#12437)

Add the LOGAF scale to the code review docs, as multiple SDK develop
docs mention the LOGAF scale. Instead of having it duplicated, we have
one central place explaining it.

Author: philipphofmann

develop-docs/engineering-practices/code-review.mdx

@@ -216,3 +216,11 @@ Please be pragmatic, and consider the cost of each incremental request for chang
 - Feedback is objective and actionable
 - Submitter responds to feedback and makes changes promptly
 - PR is approved and merged within 48 hours
+
+### LOGAF Scale
+
+For feedback in PRs, you can use the [LOGAF scale](https://blog.danlew.net/2020/04/15/the-logaf-scale/) to specify how important a comment is:
+
+- `l`: low - nitpick. You may address this comment, but you don't have to.
+- `m`: medium - normal comment. Worth addressing and fixing.
+- `h`: high - Very important. We must not merge this PR without addressing this issue.