👌 IMPROVE: Add typing to all base Entity classes

[chrisjsewell]

AuthInfo, Comment, Computer, Group, Log, Node, and User.
Also remove uuid from BackendNode, since it is not available for AuthInfo and User.

[codecov]

Codecov Report

Merging #5185 (68b7e1a) into develop (fc0b458) will increase coverage by 0.01%.
The diff coverage is 92.08%.

@@             Coverage Diff             @@
##           develop    #5185      +/-   ##
===========================================
+ Coverage    81.00%   81.00%   +0.01%     
===========================================
  Files          535      535              
  Lines        37289    37376      +87     
===========================================
+ Hits         30202    30274      +72     
- Misses        7087     7102      +15     

Flag	Coverage Δ
django	75.82% <92.08%> (+0.02%)	⬆️
sqlalchemy	74.91% <92.08%> (-<0.01%)	⬇️

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

Impacted Files	Coverage Δ
aiida/orm/implementation/users.py	100.00% <ø> (ø)
aiida/orm/authinfos.py	83.34% <83.34%> (-2.87%)	⬇️
aiida/orm/implementation/computers.py	73.47% <85.72%> (+2.05%)	⬆️
aiida/orm/utils/loaders.py	88.15% <85.72%> (-0.25%)	⬇️
aiida/orm/implementation/entities.py	98.09% <88.89%> (-0.57%)	⬇️
aiida/orm/comments.py	91.08% <89.48%> (-2.11%)	⬇️
aiida/orm/computers.py	81.64% <92.99%> (-0.31%)	⬇️
aiida/orm/logs.py	92.78% <93.34%> (-0.37%)	⬇️
aiida/orm/groups.py	94.12% <93.75%> (-0.92%)	⬇️
aiida/orm/users.py	87.63% <95.46%> (+1.75%)	⬆️
... and 7 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fc0b458...68b7e1a. Read the comment docs.