chore(workflows): Updated Slack.yml and added newcomer-alert workflow

.github/workflows/newcomers-alert.yml

@@ -0,0 +1,16 @@
+name: Newcomers Alert
+on:
+  issues:
+    types: [labeled]
+jobs:
+  good-first-issue-notify:
+    if: github.event.label.name == 'good first issue' || github.event.label.name == 'first-timers-only' 
+    name: Notify Slack for new good-first-issue
+    runs-on: ubuntu-latest
+    steps:
+      - name: Notify slack
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
+        uses: pullreminders/slack-action@master
+        with:
+          args: '{\"channel\":\"C019426UBNY\",\"text\":\"A good first issue label was just added to ${{github.event.issue.html_url}}.\"}'

.github/workflows/slack.yml

@@ -7,10 +7,10 @@ jobs:
     steps:
     - name: Get current star count
       run: |
-        echo "STARS=$(curl --silent 'https://api.github.com/repos/meshery/meshery-osm' -H 'Accept: application/vnd.github.preview' | jq '.stargazers_count')" >> $GITHUB_ENV
+        echo "STARS=$(curl --silent 'https://api.github.com/repos/${{github.repository}}' -H 'Accept: application/vnd.github.preview' | jq '.stargazers_count')" >> $GITHUB_ENV
     - name: Notify slack
       env:
         SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
       uses: pullreminders/slack-action@master
       with:
-        args: '{\"channel\":\"CSK7N9TGX\",\"text\":\"${{ github.actor }} just starred Meshery Adapter for OSM (https://github.com/meshery/meshery-osm/stargazers) Total ⭐️: ${{env.STARS}}\"}'
+        args: '{\"channel\":\"CSK7N9TGX\",\"text\":\"${{ github.actor }} just starred ${{github.repository}}! (https://github.com/${{github.repository}}/stargazers) Total ⭐️: ${{env.STARS}}\"}'