Set up default protection ruleset for default and release branches (#18)

.asf.yaml

diff --git a/.asf.yaml b/.asf.yaml
index 812b4c9..502c61b 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -31,3 +31,16 @@
     issues: true
     projects: true
 
+  rulesets:
+    - name: "Default Branch Protection"
+      type: branch
+      branches:
+        includes:
+          - "~DEFAULT_BRANCH"
+          - "release/*"
+          - "rel/*"
+        excludes: []
+      bypass_teams:
+        - root
+      restrict_deletion: true
+      restrict_force_push: true