adds stale bot

Author: jaysoo

.github/workflows/schedule-stale.yml

@@ -0,0 +1,34 @@
+on:
+  schedule:
+    - cron: "0 */12 * * *"
+name: Stale Bot workflow
+jobs:
+  build:
+    name: stale
+    runs-on: ubuntu-latest
+    steps:
+      - name: stale
+        id: stale
+        uses: actions/stale@v3
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          DAYS_BEFORE_STALE: 20
+          DAYS_BEFORE_CLOSE: 10
+          OPERATIONS_PER_RUN: 5000
+          STALE_ISSUE_MESSAGE: |
+            Hey there!
+            This issue has 
+            Hiya!
+            This issue has gone quiet. Spooky quiet. 👻
+            We get a lot of issues, so we currently close issues after 30 days of inactivity. It’s been at least 20 days since the last update here.
+            If we missed this issue or if you want to keep it open, please reply here. You can also add the label "not stale" to keep this issue open!
+            As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out [gatsby.dev/contribute](https://www.gatsbyjs.org/contributing/how-to-contribute/) for more information about opening PRs, triaging issues, and contributing!
+            Thanks for being a part of the Gatsby community! 💪💜
+          CLOSE_MESSAGE: |
+            Hey again!
+            It’s been 30 days since anything happened on this issue, so our friendly neighborhood robot (that’s me!) is going to close it.
+            Please keep in mind that I’m only a robot, so if I’ve closed this issue in error, I’m `HUMAN_EMOTION_SORRY`. Please feel free to reopen this issue or create a new one if you need anything else.
+            As a friendly reminder: the best way to see this issue, or any other, fixed is to open a Pull Request. Check out [gatsby.dev/contribute](https://www.gatsbyjs.org/contributing/how-to-contribute/) for more information about opening PRs, triaging issues, and contributing!
+            Thanks again for being part of the Gatsby community! 💪💜
+          EXEMPT_ISSUE_LABELS: |
+            not stale