Add owners for files under /.github/agents/protocols/ (#43702)

* Update CODEOWNERS to include additional ARM API reviewer paths

* Add placeholder for ARM API Reviewer protocols to satisfy CODEOWNERS requirements

* Apply suggestion from @mikeharder

Co-authored-by: Mike Harder <mharder@microsoft.com>

* Fix alignment

* Remove ARM protocol placeholder file after merging related PR

---------

Co-authored-by: Mike Harder <mharder@microsoft.com>

Author: ravimeda

.github/CODEOWNERS

@@ -319,10 +319,9 @@
 
 ## ARM API Reviewer
 
-/.github/agents/*arm*.md                @raosuhas @ravimeda @laxmankumar12
-/.github/instructions/*arm*.md          @raosuhas @ravimeda @laxmankumar12
-/.github/skills/azure-api-review/       @raosuhas @ravimeda @laxmankumar12
-/documentation/api-reviewer-agent.md    @raosuhas @ravimeda @laxmankumar12
+/.github/**/*arm-*.md                  @raosuhas @ravimeda @laxmankumar12
+/.github/skills/azure-api-review/      @raosuhas @ravimeda @laxmankumar12
+/documentation/api-reviewer-agent.md   @raosuhas @ravimeda @laxmankumar12
 
 ## ARM API Modeling Reviewers