Problem/Motivation
Currently, core and contrib modules are listed in between each other on the Extend page (/admin/modules), which can be confusing.
Steps to reproduce
Add a few contrib modules, go to /admin/modules and see that core and contrib modules are listed in between each other, and "Web services" with JSON:API, REST and Serialization core modules close to or at the bottom.
Proposed resolution
Separate core and contrib modules, by first showing the basic core modules, followed by experimental core modules, and then the rest of the core modules, labeling them clearly, for example "Core - Multilingual". Show contrib modules below, under their own "Contrib modules" header.
Now, no version and no separation between core and contrib modules
Proposal, show version and separate core and contrib modules
