chore(r2devops): add r2.yml file [skip ci]

gitleaks.r2.yml

+files:
+    template: ./templates/gitlab-ci-gitleaks.yml
+    documentation: ./README.md
+    changelog: ./CHANGELOG.md
+data:
+    description: "Detect and prevent hardcoded secrets in your Git repository with Gitleaks"
+    public: true
+    labels:
+    - to be continuous
+    - Security
+    license: LGPL v3
+    deprecated: false
\ No newline at end of file