adapt for pydantic v1 and v2

[loriab]

Description

User API & Changelog headlines

• Allow psi4 to be used with pydantic v1 or v2.

Dev notes & details

• still using pydantic v1 API but now tolerant of a v1 or v2 pydantic environment. qcel v0.26 and qcng v0.27 have recieved the same treatment. This is that part that's worthy of backport. It's already available on the c-f 1.8.1 build number _2 conda packages, having been applied by patch.
• bump qcel and qcng versions. for local build cases, switch from python setup.py to pip install from src. the latter is preferred as setup.py gets phased out, and, in any case, was necessary for qcel, which has transitioned from a setuptools to poetry build backend. this only handles the module, so if a module comes with an executable (e.g., bin/qcengine from qcng, that doesn't end up in the right place.
• fix docs GHA by constraining pb11 to 2.10 for the docs build spec. Use annotated for array pybind/pybind11#4679 seems to be the culprit. It's a good and standards-conforming change, but other tooling and/or typing stores on the internet to which sphinx refers all need time to adapt.
• generalize a few cmake config dir locations for addons.
• remove youtube links to F/I SAPT tutorials that have been taken private.
• some build docs I had lying around.

Status

• Ready for review
• Ready for merge