[media_entity] Media Entity (now "Media" in Drupal core 8.4+)

# Summary

Media entity provides a 'base' entity for media. It has a stable release, and as of Drupal 8.4, this is now included in core as the "Media" module.

# Project URL

https://www.drupal.org/project/media_entity

# Where is the code?

(in Drupal core)

# Estimated completion date

Done!

# Dependencies

N/A

# Who's doing the port?

The Drupal Media Team (https://github.com/drupal-media)

# What help do they need?

At the moment, help porting the media ecosystem to the new core API: https://janezurevc.name/call-help-media-source-plugin-porting

# D8 roadmap

#2831274: Bring Media entity module to core as Media module

# Background and reference information

#2825215: Media initiative: Roadmap
#2786785: Media in Drupal 8 Initiative