feat: add notion to enum of providers

[leynier]

No description provided.

[codecov]

Codecov Report

Merging #70 (cd1faf3) into main (23c167e) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head cd1faf3 differs from pull request most recent head 0907ad0. Consider uploading reports for the commit 0907ad0 to get more accurate results

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
+ Coverage   84.20%   84.22%   +0.01%     
==========================================
  Files          14       14              
  Lines        1051     1052       +1     
==========================================
+ Hits          885      886       +1     
  Misses        166      166              

Impacted Files	Coverage Δ
gotrue/__init__.py	100.00% <100.00%> (ø)
gotrue/types.py	100.00% <100.00%> (ø)

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[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.47%.

Quality metrics	Before	After	Change
Complexity	0.15 ⭐	0.13 ⭐	-0.02 👍
Method Length	52.67 ⭐	53.00 ⭐	0.33 👎
Working memory	5.12 ⭐	5.16 ⭐	0.04 👎
Quality	80.44% ⭐	79.97% ⭐	-0.47% 👎

Other metrics	Before	After	Change
Lines	130	129	-1

Changed files	Quality Before	Quality After	Quality Change
gotrue/types.py	80.44% ⭐	79.97% ⭐	-0.47% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

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