[ADMIN] Add file .github/repository-settings.md (#2392)

.github/repository-settings.md

@@ -0,0 +1,38 @@
+# Process
+
+This file documents local admin changes for opentelemetry-cpp,
+per the community process: https://github.com/open-telemetry/community/blob/main/docs/how-to-configure-new-repository.md
+
+Please note that the EasyCLA check **MUST** stay **REQUIRED**,
+it should never be disabled or bypassed, at the risk of tainting the repository.
+
+# Guidelines
+
+The best is to open a PR first that describes the change,
+so it can be discussed during review (maybe it is not needed,
+maybe there is an alternate solution, ...).
+
+The PR must add a log entry in this file, detailing:
+
+* the date the change is implemented
+* what is changed exactly (which setting)
+* a short rationale
+
+Admin changes are then applied only when the PR is merged.
+
+If for some reason a change is implemented in emergency,
+before a PR can be discussed and merged,
+a PR should still be prepared and pushed after the fact to
+describe the settings changed.
+
+# Log of local changes
+
+## 2023-11-03
+
+Created log file `.github/repository-settings.md`, since admin permissions are now granted to maintainers.
+
+See https://github.com/open-telemetry/community/issues/1727
+
+No setting changed.
+
+