Migrated oauth flow to db for google calendar

[Tarraann]

Description

Related Issues

Solution and Design

Test Plan

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Docs update

Checklist

• [ ] My pull request is atomic and focuses on a single change.
• [x] I have read the contributing guide and my code conforms to the guidelines.
• [ ] I have documented my changes clearly and comprehensively.
• [ ] I have added the required tests.

[codecov[bot]]

Codecov Report

Patch coverage: 42.59% and project coverage change: -0.14 :warning:

Comparison is base (5ce2dd6) 58.91% compared to head (df77c7b) 58.77%.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #663      +/-   ##
==========================================
- Coverage   58.91%   58.77%   -0.14%     
==========================================
  Files         155      156       +1     
  Lines        6316     6370      +54     
  Branches      653      654       +1     
==========================================
+ Hits         3721     3744      +23     
- Misses       2440     2471      +31     
  Partials      155      155              

Impacted Files	Coverage Δ
superagi/controllers/google_oauth.py	42.59% <42.59%> (ø)

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