docs: Add gitlab example to docs

Author: tony

docs/examples.md

@@ -37,4 +37,17 @@ YAML:
 
 ```
 
+## Script: Collect repos from Gitlab
+
+```{literalinclude} ../scripts/generate_gitlab.sh
+:language: shell
+
+```
+
+```{literalinclude} ../scripts/generate_gitlab.py
+:language: python
+
+```
+
+
 [pip vcs url]: https://pip.pypa.io/en/latest/reference/pip_install/#vcs-support