Revert "ci: removing "add to project GitHub actions" (#355)" (#360)

This reverts commit a7ffa9d.

.github/workflows/add-issue-to-project.yml

@@ -0,0 +1,19 @@
+name: add issues to project
+
+on:
+  issues:
+    types:
+      - opened
+
+jobs:
+  add-to-project:
+    name: add issue to project
+    runs-on: ubuntu-latest
+    steps:
+      - name: register bug/enhancement issues with release planning project
+        uses: actions/add-to-project@v0.5.0
+        with:
+          project-url: https://github.com/orgs/varfish-org/projects/2
+          labeled: bug, needs-triage, enhancement
+          label-operator: OR
+          github-token: ${{ secrets.BOT_TOKEN }}

.github/workflows/add-pr-to-project.yml

@@ -0,0 +1,18 @@
+name: add needs-review pull requests to projects
+
+on:
+  pull_request:
+    types:
+      - labeled
+
+jobs:
+  add-to-project:
+    name: Add pull request to project
+    runs-on: ubuntu-latest
+    steps:
+      - name: register pull requests with release planning project
+        uses: actions/add-to-project@v0.5.0
+        with:
+          project-url: https://github.com/orgs/varfish-org/projects/2
+          labeled: needs-review
+          github-token: ${{ secrets.BOT_TOKEN }}