Added Merge Conflict Check (#3138)

* added merge conflict check

* changed checkout repo

* added max tries feature

* added needs condition

* added pr target synchronize to trigger workflow

.github/workflows/pull-request.yml

@@ -15,6 +15,14 @@ on:
   pull_request:
     branches:
       - '**'
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - ready_for_review
+  pull_request_target:
+    types:
+      - synchronize
 
 env:
   CODECOV_UNIQUE_NAME: CODECOV_UNIQUE_NAME-${{ github.run_id }}-${{ github.run_number }}
@@ -449,3 +457,49 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           PR_NUMBER: ${{ github.event.pull_request.number }}
           GITHUB_REPOSITORY: ${{ github.repository }}
+
+  Merge-Conflict-Check:
+    name: Check for Merge Conflicts
+    runs-on: ubuntu-latest
+    if: github.actor != 'dependabot[bot]'
+    needs: [Code-Quality-Checks]
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Check Mergeable Status via API
+        run: |  
+          PR_NUMBER=${{ github.event.pull_request.number }}
+          max_retries=3
+          retry_delay=5
+          
+          for ((i=1; i<=max_retries; i++)); do
+            echo "Attempt $i of $max_retries"
+            
+            response=$(curl -s -f -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+              "https://api.github.com/repos/${{ github.repository }}/pulls/$PR_NUMBER")
+            
+            if [ $? -ne 0 ]; then
+              echo "Failed to call GitHub API"
+              if [ $i -eq $max_retries ]; then
+                exit 1
+              fi
+              sleep $retry_delay
+              continue
+            fi
+            
+            mergeable=$(echo "$response" | jq -r '.mergeable')
+            if [ "$mergeable" == "true" ]; then
+              echo "No conflicts detected."
+              exit 0
+            elif [ "$mergeable" == "false" ]; then
+              echo "Merge conflicts detected."
+              exit 1
+            else
+              echo "Mergeable status unknown."
+              if [ $i -eq $max_retries ]; then
+                exit 1
+              fi
+              sleep $retry_delay
+            fi
+          done