docs: 更新 lighter-python-main 文档，添加示例代码和 API 说明，重构部分内容以提高可读性

docs/lighter/lighter-python-main/.gitlab-ci.yml

@@ -0,0 +1,28 @@
+# NOTE: This file is auto generated by OpenAPI Generator.
+# URL: https://openapi-generator.tech
+#
+# ref: https://docs.gitlab.com/ee/ci/README.html
+# ref: https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Python.gitlab-ci.yml
+
+stages:
+  - test
+
+.pytest:
+  stage: test
+  script:
+   - pip install -r requirements.txt
+   - pip install -r test-requirements.txt
+   - pytest --cov=lighter --ignore-glob *api.py
+
+pytest-3.8:
+  extends: .pytest
+  image: python:3.8-alpine
+pytest-3.9:
+  extends: .pytest
+  image: python:3.9-alpine
+pytest-3.10:
+  extends: .pytest
+  image: python:3.10-alpine
+pytest-3.11:
+  extends: .pytest
+  image: python:3.11-alpine