ci: Add email checker

Integrate the Qualcomm Commit Emails Check Action to validate the commit's author
and committer email addresses - https://github.com/qualcomm/commit-emails-check-action

Signed-off-by: VISHAL KUMAR <viskuma@qti.qualcomm.com>

Author: quic-viskuma

.github/workflows/email_checker.yml

@@ -0,0 +1,10 @@
+name: PR email addresses checker
+
+on: pull_request
+
+jobs:
+  pr-check-emails:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check PR emails
+        uses: qualcomm/commit-emails-check-action@main