collect workflow stats (#124)

As part of out Worfklows Observabiltiy, lets also collect here stats for
Workflow Runs (including jobs, steps, attempts, etc) for getting
insights on usage and possible CI improvements

.github/workflows/report-workflow-stats-batch.yml

@@ -0,0 +1,53 @@
+name: Report Workflow Stats Batch
+
+on:
+  schedule:
+    - cron: '*/15 * * * *'
+    - cron: '25 0 * * *'
+    - cron: '25 1 * * 6'
+
+jobs:
+  gh-workflow-stats-batch-2h:
+    name: GitHub Workflow Stats Batch 2 hours
+    if: github.event.schedule == '*/15 * * * *'
+    runs-on: ubuntu-22.04
+    permissions:
+      actions: read
+    steps:
+      - name: Export Workflow Run for the past 2 hours
+        uses: neondatabase/[email protected]
+        with:
+          db_uri: ${{ secrets.GH_REPORT_STATS_DB_RW_CONNSTR }}
+          db_table: 'gh_workflow_stats_serverless'
+          gh_token: ${{ secrets.GITHUB_TOKEN }}
+          duration: '2h'
+
+  gh-workflow-stats-batch-48h:
+    name: GitHub Workflow Stats Batch 48 hours
+    if: github.event.schedule == '25 0 * * *'
+    runs-on: ubuntu-22.04
+    permissions:
+      actions: read
+    steps:
+      - name: Export Workflow Run for the past 48 hours
+        uses: neondatabase/[email protected]
+        with:
+          db_uri: ${{ secrets.GH_REPORT_STATS_DB_RW_CONNSTR }}
+          db_table: 'gh_workflow_stats_serverless'
+          gh_token: ${{ secrets.GITHUB_TOKEN }}
+          duration: '48h'
+
+  gh-workflow-stats-batch-30d:
+    name: GitHub Workflow Stats Batch 30 days
+    if: github.event.schedule == '25 1 * * 6'
+    runs-on: ubuntu-22.04
+    permissions:
+      actions: read
+    steps:
+      - name: Export Workflow Run for the past 30 days
+        uses: neondatabase/[email protected]
+        with:
+          db_uri: ${{ secrets.GH_REPORT_STATS_DB_RW_CONNSTR }}
+          db_table: 'gh_workflow_stats_serverless'
+          gh_token: ${{ secrets.GITHUB_TOKEN }}
+          duration: '720h'