automating MFA authentication (#303)

* added mfa authentication
* added mfa docstring
* add mfa unit testing
* added pyotp to dependencies
* update poetry.lock
* Fix docs syntax and update `.gitignore`

Co-authored-by: Adithya Balaji <[email protected]>

Author: RobertAgee

.gitignore

@@ -71,3 +71,4 @@ target/
 .DS_Store
 *.mypy_cache/*
 *.env
+docs/stubs

docs/api.rst

@@ -11,3 +11,9 @@ API Reference
     load_session
     dump_session
     exceptions
+
+.. currentmodule:: pyrh.models.sessionmanager
+.. autosummary::
+    :toctree: stubs
+
+    SessionManager

docs/stubs/.gitkeep

@@ -0,0 +1 @@
+Added on-demand MFA generation to SessionManager