Fix a few issues preventing clean project import into Eclipse 2022-06:
- `buildSrc` need to limit module imports to prevent clashes
with those in the gradle API jar.
- The CLI app needs some classpath changes in order to allow
compileOnly project dependencies to resolve.
- `AbstractJpaAutoConfigurationTests` needs some minor refactoring
in order for generic captures to work with the Eclipse compiler.
d4ed2bd47a