Strive to enhance performance of the validation execution

[RichardBruskiewich]

Validation is getting a bit more sluggish with the extent of Biolink Model semantic validation now injected into the package.

Some ideas to explore:

• Selectively disable Biolink Model validation by user-specified choice (if they don't want it) - Implemented in release v3.5.5
• Identify opportunities for caching results of methods in various parts of the system
• Can CodeDictionary access to codes and messages (and subtrees) be cached?

[RichardBruskiewich]

Eric's report on validation performance mainly seems to focus on TRAPI Schema validation being slow on large graphs?

[kennethmorton]

Reasoner pydantic may offer some benefits for speed but it does not currently perform biolink model validation.

[RichardBruskiewich]

Overlap with #95