feat: add runner stats (#79)

Signed-off-by: marcel.henselin <marcel.henselin@stackit.cloud>

## Description

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relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #79
Co-authored-by: marcel.henselin <marcel.henselin@stackit.cloud>
Co-committed-by: marcel.henselin <marcel.henselin@stackit.cloud>

.github/workflows/runnerstats.yaml

@@ -0,0 +1,29 @@
+name: Runner stats
+
+on:
+  workflow_dispatch:
+
+jobs:
+  stats-own:
+    name: "Get own runner stats"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install needed tools
+        run: |
+          apt-get -y -qq update
+          apt-get -y -qq install inxi
+
+      - name: Show stats
+        run: inxi
+
+  stats-stackit:
+    name: "Get STACKIT runner stats"
+    runs-on: stackit-docker
+    steps:
+      - name: Install needed tools
+        run: |
+          apt-get -y -qq update
+          apt-get -y -qq install inxi
+
+      - name: Show stats
+        run: inxi