[RFC] Add Retrying Session

[gtalarico]

Based on #165 and #143

Here is the proposed api:

from pyairtable import Api,retry_strategy

# current
api = Api("key", "base", "table")

# w/ default retry
api = Api("key", "base", "table", retry_strategy=retry_strategy())

# w/ customized retry
api = Api("key", "base", "table", retry_strategy=retry_strategy(total=5)
api = Api("key", "base", "table", retry_strategy=retry_strategy(status_forcelist=[429])

• left retry_strategy args as is to avoid duplicating their docs and mapping args names. Docs just references Retry lib docs.
• retry_strategy simply generates a default retry strategy but allows easy modification

PR Includes tests + docs Opening up for feedback! @@borland667

[codecov-commenter]

Codecov Report

Merging #166 (d4b3441) into main (b7bd086) will increase coverage by 0.20%. The diff coverage is 94.44%.

@@            Coverage Diff             @@
##             main     #166      +/-   ##
==========================================
+ Coverage   87.08%   87.28%   +0.20%     
==========================================
  Files          13       15       +2     
  Lines         596      629      +33     
==========================================
+ Hits          519      549      +30     
- Misses         77       80       +3     

Impacted Files	Coverage Δ
pyairtable/compat.py	83.33% <83.33%> (ø)
pyairtable/api/retrying.py	88.88% <88.88%> (ø)
pyairtable/__init__.py	100.00% <100.00%> (ø)
pyairtable/api/abstract.py	100.00% <100.00%> (ø)
pyairtable/api/api.py	76.31% <100.00%> (+0.64%)	:arrow_up:
pyairtable/api/base.py	78.37% <100.00%> (+0.60%)	:arrow_up:
pyairtable/api/table.py	100.00% <100.00%> (ø)

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[borland667]

My two cents :) Awesome work anyway! Thanks!!!

[borland667]

Hi @gtalarico is there anything I can do to help merging this one?