so that the core can act as a dependency-container without leaking it's
own (non-transitive) dependencies into the classpaths of the packages
importing it while still providing the transitive dependencies that
are needed by those packages.

This is implemented by creating the two new configurations "bundle" and
"bundleApi" which replace the previously used "releaseDep".
Dependencies of the "bundle"-configuration gets extend from the
"implementation"-configuration (by the gradle-java-plugin) which is not
transitive and therefore it's dependencies are only visible to the core
package itself while the dependencies in "bundleApi" (which the
corresponding "api"-config extends from) can be used by all packages
that import the core.
Extension in the context of configurations means that that all the
dependencies in the "bundle"-config also get added to the
"implementation"-config.

This solution has the advantage to other solutions (e.g. creating a new
OSGI package) that the complexity of the build system is not
significantly increased and no versioning of any additional OSGI
packages needs to be considered.

This commit includes just the preparations for the following commits
that actually make this happen. So at this moment the new configs
just get extended from the old "releaseDep" for compatibility
reasons (this will change in the following commits).

The solution was proposed and kindly explained to the authors by
@m273d15 following the PR saros-project#1118.

Co-authored-by: FKHals <30548867+FKHals@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>

to use the "bundle" and "bundleApi" as configurations instead of "releaseDep".

Co-authored-by: Eik0fresh <39055879+Eik0fresh@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>

to use the "bundle" and "bundleApi" as configurations instead of "releaseDep".

Co-authored-by: Eik0fresh <39055879+Eik0fresh@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>

and remove the last remains of the previous default configuration
"releaseDep".

Co-authored-by: Eik0fresh <39055879+Eik0fresh@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>

and instead let every project get it by itself, since it is not part
of the cores public api and it further reduces the coupling between
the core and these projects.

We decided that this should be a separate commit from the previous
ones (that also change the build-system) since it changes different
files and could not be integrated coherently.

Co-authored-by: Eik0fresh <39055879+Eik0fresh@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>

and instead let every project get it by itself, since it is not part
of the cores public api and it further reduces the coupling between
the core and these projects.

Co-authored-by: Eik0fresh <39055879+Eik0fresh@users.noreply.github.com>
Co-authored-by: paun42 <75132590+paun42@users.noreply.github.com>
Co-authored-by: panphil <74254708+panphil@users.noreply.github.com>