ci: ignore some changes for tests (#4152)

* ci: ignore some changes for tests

* is check ok?

* match all .md files

* is check ok?

* is check ok?

* avoid skipped but required checks

* document test-docs.yml workflow

* cleanup check tests

* trigger check

* revert readme changes

* respect changes in /tools/ for tests

Co-authored-by: Livio Spring <livio.a@gmail.com>

.github/workflows/test-code.yml

@@ -2,6 +2,10 @@ name: ZITADEL PR
 
 on:
   pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'guides/**'
+      - '**.md'
 
 jobs:
   Test:

.github/workflows/test-docs.yml

@@ -0,0 +1,20 @@
+# ATTENTION: Although this workflow doesn't do much, it is still important.
+# It is complementary to the workflow in the file test-code.yml.
+# It enables to exclude files for the workflow and still mark the Test job as required without having pending PRs.
+# GitHub recommends this solution here:
+# https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/defining-the-mergeability-of-pull-requests/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+
+name: ZITADEL PR
+
+on:
+  pull_request:
+    paths:
+      - 'docs/**'
+      - 'guides/**'
+      - '**.md'
+
+jobs:
+  Test:
+    runs-on: ubuntu-20.04
+    steps:
+      - run: 'echo "No tests for docs are implemented, yet"'