Show radio stream title using php and rest api

[medismail]

Edit by @paulijar: This PR implements radio stream title fetching for icecast/shoutcast -type radio channels. Related to #829.

[paulijar]

Thanks, much better now. There are still a few things which I would like to see improved, but I'll go into the details later. Please also check the things reported in the Scrutinizer inspection.

[medismail]

The inspection completed: 2 new issues, 7 updated code elements

This is not really an issue details here:
nextcloud/server@1e111b2
It already solved in nextcloud, maybe it should be reported to owncloud.

[paulijar]

This is not really an issue

You could work around it by returning the metadata as JSON. Something like return new JSONResponse(['title' => $response]);. And that would also be more in line with how our REST API works in general.

[scrutinizer-notifier]

The inspection completed: 1 new issues, 6 updated code elements

[paulijar]

Do you consider this now to be ready for merging, or are you still planning to make any modifications?

[medismail]

Yes it is ready to merge.

[paulijar]

This PR, along with a lot of further development built on top of it, has now been released in Music v1.6.0.