[FEATURE] subcompoents (`component.components[]`)

[jkowalleck]

according to the CDX spec multiple components can be nested inside a component - see https://cyclonedx.org/docs/1.4/json/#components_items_components

this nested component thing can be utilized to render the internals of node's bundleDependencies package feature (see CycloneDX/cyclonedx-node-npm#13)

feature request:

• make the component data model aware of nested components
  was done via add support for sub-components (Models.Component.components) #136

functional requirement

• the builders.fromPackageJson are aware of bundleDependencies and generate apropriate data models
  this is not the right place to traverse directories and generate nestings.
• the nested component.components.component.dependencies are used in rendered/serialized/normalized dependencies graph
  was done via add support for sub-components (Models.Component.components) #136

non-functional

• have unit tests for the new feature available
• IDEA: current libs/* are transformed to local sub-packages that are properly bundled ion release.
  see [IDEA] have libs as bundled packages #64