Migration graph analysis

[jmmshn]

Changes to StructureGroupDoc

• Moved code to separate file
• Added fields for StructureMatcher tolerances
• Allowed the kwargs to be passed during construction

Moved the structure group builder

• Moved the working ion and redox ion definition into settings

Added definition of migration graph document in migraiton.py

Added migration builder

• have a general GroupedThermoDocsBuilder which acts as the base builder that just grabs documents
• Then insertion InsertionElectrodeBuilder also grabs the working ion entry and builds the electrode docs
• Finally MigrationGraphBuilder will make the migration graphs

[codecov-commenter]

Codecov Report

Merging #181 (65cc9f3) into main (56f38b3) will decrease coverage by 0.16%. The diff coverage is 92.10%.

@@            Coverage Diff             @@
##             main     #181      +/-   ##
==========================================
- Coverage   95.72%   95.56%   -0.17%     
==========================================
  Files          23       24       +1     
  Lines        1592     1667      +75     
==========================================
+ Hits         1524     1593      +69     
- Misses         68       74       +6     

Impacted Files	Coverage Δ
emmet-core/emmet/core/migration.py	91.42% <91.42%> (ø)
emmet-core/emmet/core/structure_group.py	95.53% <100.00%> (+0.20%)	:arrow_up:

---

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 56f38b3...65cc9f3. Read the comment docs.