Hint schemes added to materials and summary

[munrojm]

This PR adds hints to the materials and summary endpoints using the new HintScheme class in Maggma.

[codecov-commenter]

Codecov Report

Merging #446 (3e451c7) into main (a5214e9) will increase coverage by 0.23%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #446      +/-   ##
==========================================
+ Coverage   93.35%   93.58%   +0.23%     
==========================================
  Files          65       67       +2     
  Lines        2152     2167      +15     
==========================================
+ Hits         2009     2028      +19     
+ Misses        143      139       -4     

Impacted Files	Coverage Δ
src/mp_api/core/client.py	90.40% <ø> (ø)
src/mp_api/client.py	95.61% <100.00%> (+0.05%)	⬆️
src/mp_api/routes/materials/hint_scheme.py	100.00% <100.00%> (ø)
src/mp_api/routes/summary/hint_scheme.py	100.00% <100.00%> (ø)
src/mp_api/routes/thermo/client.py	96.77% <100.00%> (ø)
src/mp_api/routes/bonds/client.py	95.83% <0.00%> (+16.66%)	⬆️

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