Add repository settings log (#1693)

Author: cijothomas

.github/repository-settings.md

@@ -0,0 +1,11 @@
+# Log of local changes
+
+Maintainers are expected to maintain this log. This is required as per
+[OpenTelemetry Community
+guidelines](https://github.com/open-telemetry/community/blob/main/docs/how-to-configure-new-repository.md#collaborators-and-teams).
+
+## April 30th 2024
+
+Modified branch protection for main branch to require the following CI checks:
+docs
+test (stable)