Update repo to match main template

[rogebrd]

• Add issue template
• Add pr template
• Add dependabot
• Update Readme
• Add Contributing
• Add Code of Conduct
• Update license
  NOTE: Still waiting on updated logo

[codecov]

Codecov Report

Merging #176 into master will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #176      +/-   ##
==========================================
- Coverage   50.80%   50.79%   -0.01%     
==========================================
  Files          37       37              
  Lines        8320     8315       -5     
  Branches     1770     1768       -2     
==========================================
- Hits         4227     4224       -3     
+ Misses       3780     3778       -2     
  Partials      313      313              

Flag	Coverage Δ
#unit	50.79% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
stone/backends/tsd_types.py	37.65% <0.00%> (-0.78%)	⬇️
stone/backends/swift_client.py	0.00% <0.00%> (ø)
stone/backends/swift_helpers.py	0.00% <0.00%> (ø)

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