feat(ci): Added pipeline for tests

Add all supported, meaning by flaschengeist, python versions.

.woodpecker/test.yml

@@ -0,0 +1,19 @@
+pipeline:
+  install:
+    image: python:${PYTHON}-alpine
+    commands:
+      - apk add mariadb-dev jpeg-dev
+      - python -m pip install --upgrade pip
+      - pip install -v ".[tests]"
+  test:
+    image: python:${PYTHON}-alpine
+    commands:
+      - pytest
+
+
+matrix:
+  PYTHON:
+    - 3.10
+    - 3.9
+    - 3.8
+    - 3.7