Update typing in Pyomo

[jsiirola]

Summary

As part of Pyomo 7 we should make an effort to improve type hints across Pyomo.

Rationale

Typing would go a long ways toward help connect users to documentation.

Description

We should strive to provide type hints to all APIs used in The Book examples. This includes:

• adding type hints for the core Pyomo components
• ...

Additionally, we are currently very inconsistent in how we use of type hints across Pyomo. Some if it is no longer needed (now that we are only supporting Python 3.10+):

• remove use of typing.Union and replace with (Python 3.10+) |
• remove use of typing.List, typing.Tuple, etc and replace with list. tuple, etc. (Python 3.9+)

Additional information