chore: documentation (#76)

* chore: update docstring example to use python code block

* docs: add documentation

* feat: add docs build + fix other workdlows

* fix: add missing return type

docs/reference/dependencies.md

@@ -0,0 +1,13 @@
+# `dependencies`
+
+Here's the reference for the FastAPI dependency factory functions.
+
+You can import them directly from `fastapi_toolsets.dependencies`:
+
+```python
+from fastapi_toolsets.dependencies import PathDependency, BodyDependency
+```
+
+## ::: fastapi_toolsets.dependencies.PathDependency
+
+## ::: fastapi_toolsets.dependencies.BodyDependency