docs: iam docstrings

Issue: #13

src/iam/dependencies.py

@@ -1,13 +1,10 @@
 """
-Router dependencies for the IAM module
+Dependencies for the IAM module
 
-Classes:
- - List: Description
- - Classes: Description
-
-Functions:
- - List: Description
- - Functions: Description
+Exports:
+ - group_model_query_dependency: group_model: Gets group model from db, if it exists. Uses group_id from query param.
+ - group_model_body_dependency: group_model: Gets group model from db, if it exists. Uses group_id from request body.
+ - perm_model_body_dependency: perm_model: Gets perm model from db, if it exists. Uses perm_id from request body.
 """
 from typing import Annotated, Optional