Support Eclipse Features in p2 repos

[peterkir]

P2 repositories can contain eclipse features.
Those are containers for bundles and other imported or required features.
Support includes parsing, displaying and using features inside *.bndrun files.

[chrisrueger]

Cool. I gave this a quick try:

1. added Eclipse P2 repo

-plugin.1.Eclipse:\
	aQute.bnd.repository.p2.provider.P2Repository; \
	 	url = https://download.eclipse.org/releases/2025-12/; \
	 	name = "Eclipse-2025-12"       

2. observed the Repo Browser

One thing I noticed:

• After added the new repo, it downloaded everything and then the repo browser was blank (no repos shown at all).
  After pressing refresh in the repo browser all repos appeared including the new added repo. (not sure if this is new behavior...just want to mention it.)

I have not yet tried using the features anywhere.