Add support for User Repo for Files

[westonMS]

Add support for the user to grab files from their own repo. This would allow the user to save files to their github, then use those verilog files in their colabs, allowing them to leave then come back.

-Allow user to push files to their own repo.
-Allow user to specifiy their repo. (Use a jinja action??)
-Have the Simulation widget be able to pull first from the user file or the base file

[resoluteprogrammer]

Added Support to save files to Google drive. Currently only will save one copy for each workspace. (Possible room for improvement to save files) Pull request #75

[resoluteprogrammer]

Adding github support seems impractical it would require either somehow generating ssh keys (which would have to be done in each google colab instance generated)

Personal access tokens could be used but that would require the user to generate one and then we'd need to add a method for a user to enter their repository, their user id, and the access token.