feat:added welcome-first-time-contributor.yml

Signed-off-by: shiva <shiva_05@outlook.com>

Author: shivasankaran18

.github/workflows/welcome-first-time-contributor.yml

@@ -0,0 +1,82 @@
+
+name: Welcome first time contributors
+
+on:
+  pull_request_target:
+    types: 
+      - opened
+  issues:
+    types:
+      - opened
+
+jobs:
+  welcome:
+    name: Post welcome message
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/github-script@v7
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        script: |
+          const issueMessage = `Welcome to Accord. Thanks a lot for reporting your first issue. Please check out our [contributors guide](https://github.com/accordproject/techdocs/blob/main/CONTRIBUTING.md) .<br />Keep in mind there are also other channels you can use to interact with Accord community. For more details check out [dicord](https://discord.com/invite/Zm99SKhhtA).`;
+          const prMessage = `Welcome to Accord. Thanks a lot for reporting your first issue. Please check out our [contributors guide](https://github.com/accordproject/techdocs/blob/main/CONTRIBUTING.md) .<br />Keep in mind there are also other channels you can use to interact with Accord community. For more details check out [dicord](https://discord.com/invite/Zm99SKhhtA).`;
+          if (!issueMessage && !prMessage) {
+              throw new Error('Action must have at least one of issue-message or pr-message set');
+          }
+          const isIssue = !!context.payload.issue;
+          let isFirstContribution;
+          if (isIssue) {
+              const query = `query($owner:String!, $name:String!, $contributer:String!) {
+              repository(owner:$owner, name:$name){
+                issues(first: 1, filterBy: {createdBy:$contributer}){
+                  totalCount
+                }
+              }
+            }`;
+            const variables = {
+              owner: context.repo.owner,
+              name: context.repo.repo,
+              contributer: context.payload.sender.login
+            };
+            const { repository: { issues: { totalCount } } } = await github.graphql(query, variables);
+            isFirstContribution = totalCount === 1;
+          } else {
+              const query = `query($qstr: String!) {
+                search(query: $qstr, type: ISSUE, first: 1) {
+                   issueCount
+                 }
+              }`;
+            const variables = {
+              "qstr": `repo:${context.repo.owner}/${context.repo.repo} type:pr author:${context.payload.sender.login}`,
+            };
+            const { search: { issueCount } } = await github.graphql(query, variables);
+            isFirstContribution = issueCount === 1;
+          }
+          
+          if (!isFirstContribution) {
+              console.log(`Not the users first contribution.`);
+              return;
+          }
+          const message = isIssue ? issueMessage : prMessage;
+          // Add a comment to the appropriate place
+          if (isIssue) {
+              const issueNumber = context.payload.issue.number;
+              console.log(`Adding message: ${message} to issue #${issueNumber}`);
+              await github.rest.issues.createComment({
+                  owner: context.payload.repository.owner.login,
+                  repo: context.payload.repository.name,
+                  issue_number: issueNumber,
+                  body: message
+              });
+          }
+          else {
+            const pullNumber = context.payload.pull_request.number;
+              console.log(`Adding message: ${message} to pull request #${pullNumber}`);
+              await github.rest.pulls.createReview({
+                  owner: context.payload.repository.owner.login,
+                  repo: context.payload.repository.name,
+                  pull_number: pullNumber,
+                  body: message,
+                  event: 'COMMENT'
+              });
+          }