Add option to omit all qualifiers from PackageURLs (--short-PURLs)

SBOMs generated with version 2.7.1 contain PackageURLs with classifier `type=jar`, which complicates the comparison with SBOMs generated by other tools.

Example:
```
"purl" : "pkg:maven/com.fasterxml.jackson.core/jackson-core@2.12.6?type=jar"
```

It would be nice if the Maven Plugin offers a configuration option to omit classifiers altogether, similar to the [`--short-PURLs`](https://github.com/CycloneDX/cyclonedx-node-npm#usage) option of cyclonedx-npm.

No source files or tests are named. Start by tracing how the Maven plugin generates PackageURLs and compare the requested behavior with cyclonedx-npm's --short-PURLs option. Done means a Maven configuration option can omit all qualifiers, including ?type=jar, from generated PackageURLs.

Written by the indexing model from the issue text.