[IDEA] feat: support PEP-725 - Specifying external dependencies in `pyproject.toml`

[jkowalleck]

PEP725 - https://peps.python.org/pep-0725/
!!! PEP IS STILL IN DRAFT

as soon as it might be approved: add support for PEP725 (Specifying external dependencies in pyproject.tom).

[jkowalleck]

the feature requires CycloneDX 1.7 - as it dependson the "isExternal" feature

• see https://cyclonedx.org/docs/1.7/json/#components_items_isExternal