Recipe to create SBOM for Maven and Gradle

What problem are you trying to solve?

Folks might want to produce an SBOM for their projects for compliance or other reasons.
We already have a Maven Mojo to produce a CycloneDx file, but this is limited to Maven and the Maven plugin. That Mojo uses an existing utility class to print the CycloneDxBom given a Maven document.

Describe the situation after applying the recipe

An SBOM produced, either as a diff (in the output folder?), or as a datatable entry for aggregation across projects,
for all of Maven and Gradle, possibly Bazel.

Have you considered any alternatives or workarounds?

We could add a Gradle task, Bazel action and who knows what next, but that would have some duplication and does not allow the production of SBOMs through the CLI or platform.

Start with the linked CycloneDxBomMojo.java and PrintMavenAsCycloneDxBom.java utility to understand the existing Maven SBOM path. Then trace how recipes expose output through the CLI or platform. Done means the issue defines and supports SBOM production for Maven and Gradle, with the chosen diff or datatable output documented.