Simplified dependency management into Bill of Material dependencies as parents that align to classloader structures.
- Moved nifi-framework-bundle to root level
- Moved nifi-nar-bundle modules to root nifi-extension-bundles
- Added nifi-extension-bom for internal and external extensions
- Added nifi-framework-nar-bom and nifi-server-nar-bom for managing framework dependencies
- Renamed nifi-jetty-bundle to nifi-jetty-nar
This closes#8677
Signed-off-by: David Handermann <exceptionfactory@apache.org>
