ci: replace stale bot with custom implementation

The stale action has a bug where it won't close an issue/PR if it has
comments after the stale label.

.github/workflows/response.yml

@@ -0,0 +1,35 @@
+name: no_response
+on:
+  schedule:
+    - cron: '30 1 * * *' # Run every day at 01:30
+  workflow_dispatch:
+  issue_comment:
+
+jobs:
+  close:
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const script = require('./.github/scripts/close_unresponsive.js')
+            await script({github, context})
+
+  remove_label:
+    if: github.event_name == 'issue_comment'
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const script = require('./.github/scripts/remove_response_label.js')
+            await script({github, context})

.github/workflows/stale.yml

@@ -1,42 +0,0 @@
-name: 'Close stale issues and PRs'
-on:
-  schedule:
-    - cron: '30 1 * * *' # Run every day at 01:30
-  workflow_dispatch:
-  issue_comment:
-
-jobs:
-  close:
-    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-      pull-requests: write
-    steps:
-      - uses: actions/stale@v8
-        with:
-          days-before-close: 30
-          days-before-stale: -1
-          stale-issue-label: needs:response
-          stale-pr-label: needs:response
-          remove-stale-when-updated: false
-          close-issue-message: "This issue has been closed since a request for
-            information has not been answered for 30 days. It can be reopened
-            when the requested information is provided."
-          close-pr-message: "This PR has been closed since a request for
-            changes has not been answered for 30 days. It can be reopened when
-            the requested changes are provided."
-
-  remove-label:
-    if: github.event_name == 'issue_comment'
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-      pull-requests: write
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/github-script@v6
-        with:
-          script: |
-            const script = require('./.github/scripts/unstale.js')
-            await script({github, context})