Add put endpoint for editing site

[ericcccsliu]

Pull Request

Adds PUT endpoint for editing site details!

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] wrote tests!

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

Merging #88 (9ed54b5) into h4i/enode (a4fb461) will increase coverage by 2.24%. The diff coverage is 95.09%.

@@              Coverage Diff              @@
##           h4i/enode      #88      +/-   ##
=============================================
+ Coverage      87.31%   89.56%   +2.24%     
=============================================
  Files              9       11       +2     
  Lines            410      527     +117     
=============================================
+ Hits             358      472     +114     
- Misses            52       55       +3     

Impacted Files	Coverage Δ
pv_site_api/session.py	37.50% <0.00%> (ø)
pv_site_api/auth.py	90.47% <90.47%> (ø)
pv_site_api/main.py	92.23% <94.80%> (+1.68%)	:arrow_up:
pv_site_api/cache.py	97.14% <97.14%> (ø)
pv_site_api/__init__.py	100.00% <100.00%> (ø)
pv_site_api/_db_helpers.py	100.00% <100.00%> (ø)
pv_site_api/pydantic_models.py	100.00% <100.00%> (ø)

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