Fix unhashable type error

Checklist

• documentation is changed or added in ./docs
• unit tests updated to test changes

Description

Context

Merging SBOMs was failing when using certain CycloneDX models missing a __hash__ method.

Intent

• Use CycloneDXBaseModel as super class for AffectVersion model in order to inherit its __hash__ method
• Add __hash__ methods to various model classes
• Update hoppr.utils.dedup_list function to accept and return a generic type bound to typing.Hashable
  • This should help mypy raise errors if attempting to write code that calls dedup_list with a list of objects that don't implement the __hash__ method

Closes #302 (closed)