Netcore: Package support for media + media types (#9547)

* Add support for media when installing a package

* clean up

* Fix tests

* Add support for media when installing a package

* clean up

* Fix tests

* moved tests + test data

* Migrated package tests + resources

* Fix issue with media picker on package page, was empty after save.

* Added missing files

* Fix casing issue of resources

* Added test for media

* Fix tests for linux

* Fix test

* Fix issue with move media..

* Fix issue with adding files to packages

* Add MediaType permissions.

* Fix test

* Fix test

* Retry flaky tests, and added TODOs to fix those

* new attempt to fix test

Co-authored-by: Mole <nikolajlauridsen@protonmail.ch>

src/Umbraco.Web.UI.NetCore/umbraco/config/lang/en_us.xml

@@ -730,6 +730,7 @@
     <key alias="logout">Logout</key>
     <key alias="macro">Macro</key>
     <key alias="mandatory">Mandatory</key>
+    <key alias="media">Media</key>
     <key alias="message">Message</key>
     <key alias="move">Move</key>
     <key alias="name">Name</key>