adds lock and stale workflows

Author: abhi1693

.github/workflows/lock.yml

@@ -0,0 +1,21 @@
+# lock-threads (https://github.com/marketplace/actions/lock-threads)
+name: 'Lock threads'
+
+on:
+  schedule:
+    - cron: '0 3 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v3
+        with:
+          issue-inactive-days: 90
+          pr-inactive-days: 30
+          issue-lock-reason: 'resolved'

.github/workflows/stale.yml

@@ -0,0 +1,45 @@
+# close-stale-issues (https://github.com/marketplace/actions/close-stale-issues)
+name: 'Close stale issues/PRs'
+
+on:
+  schedule:
+    - cron: '0 4 * * *'
+  workflow_dispatch:
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v6
+        with:
+          close-issue-message: >
+            This issue has been automatically closed due to lack of activity. In an
+            effort to reduce noise, please do not comment any further. Note that the
+            core maintainers may elect to reopen this issue at a later date if deemed
+            necessary.
+          close-pr-message: >
+            This PR has been automatically closed due to lack of activity.
+          days-before-stale: 90
+          days-before-close: 30
+          exempt-issue-labels: 'status: accepted,status: blocked,status: needs milestone'
+          operations-per-run: 100
+          remove-stale-when-updated: false
+          stale-issue-label: 'pending closure'
+          stale-issue-message: >
+            This issue has been automatically marked as stale because it has not had
+            recent activity. It will be closed if no further activity occurs. NetBox
+            is governed by a small group of core maintainers which means not all opened
+            issues may receive direct feedback. **Do not** attempt to circumvent this
+            process by "bumping" the issue; doing so will result in its immediate closure
+            and you may be barred from participating in any future discussions. Please see
+            our [contributing guide](https://github.com/netbox-community/netbox/blob/develop/CONTRIBUTING.md).
+          stale-pr-label: 'pending closure'
+          stale-pr-message: >
+            This PR has been automatically marked as stale because it has not had
+            recent activity. It will be closed automatically if no further action is
+            taken.