[Feature] Align Python Interface With API - Stop Requiring OBBject As Output Type In PackageBuilder As Default

[deeleeramone]

1. Why?:

   • This PR aligns the Python interface with recent changes from openbb-platform-api, removing the requirement for the output of all functions be an instance of OBBject.

2. What?:

   • Removes strict type output enforcement that was limited to only the Python interface.

3. Impact:

   • Ensures Python interface doesn't fail to build where the API works as-expected.
   • Does not impact API.

4. Testing Done:

   • Tested with a custom router and bare OpenBB package.
     • Aside from output type freedom, look at docstrings and reference.json
   • Reference Generator can use some further optimization, but leaving that for another day.