Adds one-hot encoding of amino acids types as node feature

[a-r-j]

Reference Issues/PRs

N/A

What does this implement/fix? Explain your changes

Adds onehot encoding of Amino acid types as node features.

What testing did you do to verify the changes in this PR?

Includes example test and execution test.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #116 (9731bf7) into master (8123f42) will increase coverage by 1.12%. The diff coverage is 37.17%.

@@            Coverage Diff             @@
##           master     #116      +/-   ##
==========================================
+ Coverage   40.27%   41.39%   +1.12%     
==========================================
  Files          48       50       +2     
  Lines        2811     3167     +356     
==========================================
+ Hits         1132     1311     +179     
- Misses       1679     1856     +177     

Impacted Files	Coverage Δ
graphein/protein/analysis.py	0.00% <0.00%> (ø)
graphein/protein/visualisation.py	12.93% <9.67%> (-3.29%)	:arrow_down:
graphein/protein/graphs.py	74.21% <66.66%> (+2.51%)	:arrow_up:
graphein/protein/utils.py	68.00% <73.33%> (+16.78%)	:arrow_up:
graphein/protein/subgraphs.py	73.64% <73.64%> (ø)
graphein/protein/features/nodes/amino_acid.py	84.48% <88.23%> (+0.76%)	:arrow_up:
graphein/__init__.py	100.00% <100.00%> (ø)
graphein/protein/__init__.py	84.61% <100.00%> (+1.28%)	:arrow_up:
graphein/protein/features/nodes/dssp.py	90.12% <100.00%> (+65.44%)	:arrow_up:
graphein/protein/resi_atoms.py	100.00% <100.00%> (ø)
... and 9 more

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