Set up default protection ruleset for default and release branches (#8)

.asf.yaml

diff --git a/.asf.yaml b/.asf.yaml
index 46cf732..55b8eef 100644
--- a/.asf.yaml
+++ b/.asf.yaml
@@ -35,3 +35,16 @@
     squash: true
     merge: false
     rebase: 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