feat: commit media with post (#2851)

* feat: commit media with post - initial commit

* feat: add draft media indication

* feat: sync UI media files with GitHub on entry load

* feat: bug fixes

* feat: delete media files from github when removed from library

* test: add GitHub backend tests

* test: add unit tests

* fix: meta data object files are not updated

* feat: used nested paths when update a tree instead of recursion

* feat(test-backend): update test backend to persist media file with entry

* test(e2e): re-record fixtures data

* chore: code cleanup

* chore: code cleanup

* fix: wait for library to load before adding entry media files

* chore: code cleanup

* fix: don't add media files on entry when not a draft

* fix: sync media library after draft entry was published

* feat: update media library card draft style, add tests

* test: add Editor unit tests

* chore: test code cleanup

* fix: publishing an entry from workflow tab throws an error

* fix: duplicate media files when using test backend

* refactor: fix lodash import

* chore: update translations and yarn file after rebase

* test(cypress): update recorded data

* fix(test-backend): fix mapping of media files on publish

packages/netlify-cms-ui-default/src/styles.js

@@ -79,6 +79,8 @@ const colors = {
   controlLabel: '#7a8291',
   checkerboardLight: '#f2f2f2',
   checkerboardDark: '#e6e6e6',
+  mediaDraftText: colorsRaw.purple,
+  mediaDraftBackground: colorsRaw.purpleLight,
 };
 
 const lengths = {