add sync workflow in test mode

.github/workflows/create-pr-subnet-evm.yml

@@ -0,0 +1,28 @@
+name: Sync PRs between Repos
+
+on:
+  pull_request:
+    # types: [closed]
+
+jobs:
+  sync_pr:
+    # if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+    - name: Create PR in Repo Subnet-EVM
+      run: |
+        # Get the body of the original PR
+        original_body=$(gh pr view ${GITHUB_REPOSITORY} --json body --jq '.body')
+
+        gh pr create \
+          --repo ava-labs/subnet-evm \
+          --title "${{ github.event.pull_request.title }}" \
+          --body "This PR was automatically created to sync changes from Coreth.\n\nOriginal PR: ${{ github.event.pull_request.html_url }}\n\n---\n\n${original_body}" \
+          --base "${{ github.event.pull_request.base.ref }}" \
+          --head "${{ github.event.pull_request.head.ref }}" \
+          --assignee "${{ github.event.pull_request.user.login }}" \
+          --draft=false
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}