Enables media tracking in 8.6

[skttl]

So, this enables the new media tracking feature (it actually also tracks content usage, so Core must be preparing for this).

Anyone wants to take this for at spin, to see if I missed anything?

I would also appreciate a review of the code, was hacking away and got it working now :)

The code is based of @warrenbuckley s example and the existing IDataValueReference for grid and nested content (because NC's datamodel is quite similar to DTGEs.

Obiously this would bump the minimum required version to 8.6 - would like some input on that as well :)

Happy easter everyone 🐣

[skttl]

Umbraco package zip

[FransdeJong]

If a new version would depend on 8.6 that's not a issue right? If the older version is required you can always get it from nuget?

[skttl]

I know, but we have a few issues waiting for a release. Should I release those before, so people can get the newest without upgrading Umbraco, and then right after the new version with media tracking.

For my own sake, I'm ok with just a 1.2 version with a minimum dependency on 8.6. So if other people REALLY wants a 1.2 for 8.1, and then 1.3 for 8.6 then speak up :)

[FransdeJong]

The best customer service would be 2 separate updates. But you aren't running a commercial package so I would say 1 package is sufficient

[FransdeJong]

Is is safe to update Umbraco without this PR? I guess it only adds functionality so the answer should be yes?

[skttl]

Yes, it is safe. You'll just miss media tracking for stuff inside DTGEs.

Apparently there is an issue (#183), but I'm not sure if that is specific to 8.6 or not, and it doesn't seem to break (at least my test 8.6 site worked :))