[CDX 2.0] test resources component choice enhancements

[jkowalleck]

we have existing test resources for component choices

• https://github.com/CycloneDX/specification/blob/2.0-dev/tools/src/test/resources/2.0/valid-component-choice-xor-2.0.json
• https://github.com/CycloneDX/specification/blob/2.0-dev/tools/src/test/resources/2.0/valid-component-choice-or-2.0.json

lets make them a bit more realistic, by

• flagging the existing HBOMs as pre-build phase
• adding a new planing-phase example, that uses one if the existing libxml implementations for js: https://www.npmjs.com/search?q=libxml
• adding a new runtime-ready build-phase example, that can use any of the existing providers for psr/log-implementation: https://packagist.org/providers/psr/log-implementation