[DOCS]: Add an Example of Validating SBOMs

[saquibsaifee]

Create documentation to guide users on validating SBOMs.

The CycloneDX Python library can validate an SBOM based on the schema, independent of the library's support for SBOM serialization, which is a valuable feature. However, the current documentation lacks clear examples and instructions on effectively utilizing this validation functionality.

The following points should be addressed in the documentation:

An overview of how to validate SBOMs based on schema specifications. Examples demonstrating the validation process, including code snippets using JsonStrictValidator and other relevant classes.

[jkowalleck]

examples: https://github.com/CycloneDX/cyclonedx-python-lib/blob/a210809efb34c2dc895fc0c6d96a3412a9097625/examples/complex_deserialize.py#L148-L156

[saquibsaifee]

I will be working on this.