Discord Workflow for Issues and pull-requests(non-maintainers-only) (#3009)

* Added discuss_on_discord extension

* Added workflow to create threads for help wanted issues on discord

* Update .github/workflows/discord_issues.yml

Co-authored-by: vfdev <vfdev.5@gmail.com>

* Added check for non-maintainer based PRs to discuss in discord

* Changed the set-output type pattern

* Update .github/workflows/discord_issues.yml

Co-authored-by: vfdev <vfdev.5@gmail.com>

* Adding right destination for discord channel

* Update Non-maintainers requirement in discord_issues.yml

---------

Co-authored-by: vfdev <vfdev.5@gmail.com>

Author: guptaaryan16

.github/workflows/discord_issues.yml

@@ -1,26 +1,44 @@
 name: Discuss on Discord
+
 on:
   issues:
     types:
       - labeled
+  pull_request:
+    types:
+      - labeled
   workflow_dispatch:
     inputs:
       issue_number:
         description: 'Issue number'
-        required: true
-      
+      pull_request_number:
+        description: 'Pull request number'
+
 permissions:
   issues: write
+  pull-requests: write
 
 jobs:
   discord:
     runs-on: ubuntu-latest
     steps:
-      - name: Discuss on Discord
+      - name: "Discuss on Discord-Issues"
+        if: github.event.issue && contains(github.event.issue.labels.*.name, 'help wanted')
         uses: EndBug/discuss-on-discord@v1.1.0
-        if: ${{ github.event.label.name == 'help wanted' }}
         with:
-            discord_bot_token: ${{ secrets.DISCORD_BOT_TOKEN }}
-            destination: ${{ secrets.DISCORD_BOT_DESTINATION }}
-            issue_number: ${{ github.event.inputs.issue_number || github.event.issue.number }}
-            issue_comment: Hey 👋, I've just created a [thread]($THREAD_LINK$) for this issue on [PyTorch-Ignite Discord](https://pytorch-ignite.ai/chat) where you can quickly talk to the community on the topic.
+          discord_bot_token: ${{ secrets.DISCORD_BOT_TOKEN }}
+          destination: ${{ secrets.DISCORD_BOT_DESTINATION }}
+          issue_number: ${{ github.event.inputs.issue_number || github.event.issue.number }}
+          issue_comment: Hey 👋, I've just created a [thread]($THREAD_LINK$) for this issue on [PyTorch-Ignite Discord](https://pytorch-ignite.ai/chat) where you can quickly talk to the community on the topic.
+          discord_message: New issue created in `${{ github.repository }}`:<https://github.com/${{ github.repository }}/issues/${{ github.event.issue.number }}>
+          
+      - name: "Discuss on Discord-PR (Non-maintainer only)"
+        if: github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'help wanted')
+        uses: EndBug/discuss-on-discord@v1.1.0
+        with:
+          discord_bot_token: ${{ secrets.DISCORD_BOT_TOKEN }}
+          destination: ${{ secrets.DISCORD_BOT_DESTINATION }}
+          issue_number: ${{ github.event.inputs.pull_request_number || github.event.pull_request.number }}
+          issue_comment: Hey 👋, I've just created a [thread]($THREAD_LINK$) for this pull request on [PyTorch-Ignite Discord](https://pytorch-ignite.ai/chat) where you can quickly talk to the community on the topic.
+          discord_message: New PR created in `${{ github.repository }}`:<https://github.com/${{ github.repository }}/pull/${{ github.event.pull_request.number }}>
+