[WIP] Large structural changes to MPcules

[espottesmith]

Meant to do this piecemeal, but there kept being things that I wanted/needed. Also, the main point was to make changes/fixes to the API, and that's actually one of the things I still need to mess with/test. Anyways, here we are.

Contributor Checklist

• [X] I have broken down my PR scope into the following TODO tasks
  • [X] Add new document containing molecular dipole/multipole data and associated builders
  • [X] On @munrojm's suggestion, changed the has_props field in the molecule summary doc to aid in querying
  • [X] Remove probably unnecessary query operators
  • [X] Switch molecule element querying to be based on composition, which should be more efficient?
  • [X] Add dipoles/multipoles to the information returned in a trajectory query. Also improved testing for the trajectory query operator
  • [X] Add three-center (3C) bonds and 3-center 4-electron hyperbonds to the orbital doc/builder. Thanks @samblau for making the changes to pymatgen necessary to parse this data
  • [X] Change all molecule property builders to break down documents based on hash, rather than formula. Even for the small and quick property builders, the current scale of the data (~4M tasks, ~600k molecules) made separation by formula problematic.
  • [x] Reformat some data to remove lists (where possible) and make querying on summary document faster
  • [ ] Make some changes to NBO-based bonding, based on some issues identified by @samblau and @orionarcher
  • [ ] (Potentially) add string reps (InChI and SMILES) to all molecules docs, rather than just tasks (for SMILES) and molecules/summary (for InChI)
• [X] I have run the tests locally and they passed. (I never run ALL the tests, cause that takes a hot minute, but I did run all of the tests that I messed with!)
• [X] I have added tests, or extended existing tests, to cover any new features or bugs fixed in this PR

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 91.21756% with 88 lines in your changes missing coverage. Please review.

Project coverage is 89.91%. Comparing base (f0c70f4) to head (4613ad9). Report is 1 commits behind head on main.

Files	Patch %	Lines
emmet-core/emmet/core/molecules/trajectory.py	81.18%	38 Missing :warning:
...et-builders/emmet/builders/molecules/trajectory.py	91.62%	16 Missing :warning:
...mmet-api/emmet/api/routes/molecules/tasks/utils.py	50.00%	11 Missing :warning:
...t/api/routes/molecules/electric/query_operators.py	76.92%	9 Missing :warning:
...mmet-builders/emmet/builders/molecules/electric.py	94.23%	6 Missing :warning:
emmet-core/emmet/core/molecules/electric.py	95.65%	4 Missing :warning:
emmet-core/emmet/core/molecules/orbitals.py	97.43%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #926 +/- ## ========================================== + Coverage 89.80% 89.91% +0.11% ========================================== Files 142 146 +4 Lines 13394 13468 +74 ========================================== + Hits 12028 12110 +82 + Misses 1366 1358 -8 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[espottesmith]

This is still WIP (will be contributing to it this week), but it'd be helpful at this point to have folks' eyes on it. @munrojm @orionarcher