[QG] Add quality gates on main branch

[+] add lint pipeline for ruff isort and black checks
[+] add types pipeline for mypy check
[+] add tests pipeline for pytest check with coverage less 70% blocker QG
[+] add some tests fo QG pass

.woodpecker/tests.yaml

@@ -0,0 +1,12 @@
+when:
+  - event: [push, pull_request]
+    branch: main
+
+steps:
+  - name: tests
+    image: python:3.11
+    commands:
+      - pip install uv
+      - uv sync --no-dev --group tests
+      - uv run pytest --cov=app --cov-fail-under=70 --cov-report=term-missing
+