Core Guess

[ryanmrichard]

Is this pull request associated with an issue(s)?
No.

Description
I did things out of order. While a core guess seems like it should be the next thing to implement, to do one you have to essentially need to be able to build a Fock matrix and do one update. In turn this PR:

• Module for building Fock operator can now do the one-electron or many-electron version.
• Adds module for the core guess.
• Adds an integral driver module that takes an OperatorBase and dispatches accordingly (I'm leaning towards putting this in integrals, but it gets weird since it can compute Fock, J, and K matrices).
• Adds a module for computing the Fock matrix.
• Adds a module for computing J.
• Adds a module for computing K.
• Adds a module for updating the wavefunction given the current Fock matrix.

TODOs

• Merge more typedefs needed by SCF. SimDE#157
• Merge integrals plugin added NWChemEx#141

[ryanmrichard]

r2g.

[jwaldrop107]

🚀 [bumpr] Bumped! New version:v0.0.7 Changes:v0.0.6...v0.0.7