chore: add central probot settings.yml

Author: hyperpolymath

.github/settings.yml

@@ -0,0 +1,16 @@
+repository:
+  has_issues: true
+  has_projects: true
+  has_wiki: true
+  default_branch: main
+  allow_squash_merge: true
+  allow_merge_commit: true
+  allow_rebase_merge: true
+  allow_auto_merge: true
+  delete_branch_on_merge: true
+  allow_update_branch: true
+  squash_merge_commit_title: PR_TITLE
+  squash_merge_commit_message: PR_BODY
+  merge_commit_title: PR_TITLE
+  merge_commit_message: PR_BODY
+  web_commit_signoff_required: true