Replace old episode multi-select with new multi-select.

[peakvalleytech]

Resolves issue #5250.

This is only preliminary. I know there is still a lot of cleaning up to do. The current commit mainly implements the new multi select for the QeueFragment and CompletedDownloadsFragment

[ByteHamster]

Thanks for working on this. A few things I noticed when playing around with it:

• In the queue, the multi-select context menu item is not the top-most one. I think it should consistently be either the first or the last one on all screens.
• In the queue, you can still drag around episodes. We only store the ID of the selected items (not the position) but it still feels a bit risky that episodes can be dragged in select mode.

[ByteHamster]

I just did a little bit of cleanup and also moved the multi-select item to the bottom. I know it was on the top before but having to assign positions to every single item looks like too much overhead to me. Also, I think it is fine because multi-select is probably not the most-used action and should therefore not be the first one.

Looks pretty much ready to merge now. Do you still notice any issues?

[peakvalleytech]

I just did a little bit of cleanup and also moved the multi-select item to the bottom. I know it was on the top before but having to assign positions to every single item looks like too much overhead to me. Also, I think it is fine because multi-select is probably not the most-used action and should therefore not be the first one.

Looks pretty much ready to merge now. Do you still notice any issues?

Everything looks great. Although I did notice this problem, #5252. You can merge this PR now. I'll just create a new one to fix it.

Now assuming multi select for episodes is finished, we can start on multi select for feeds. There is already a PR currently opend targeted at multi select for feeds.
But that code in that PR has divereged so much from the new implementation that I think it is best to close it and create a new one.

[ByteHamster]

Thanks! Will be released in AntennaPod 2.4.0 :)

[keunes]

Thanks a lot @peakvalleytech!

[antennapod-bot]

This pull request has been mentioned on AntennaPod Forum. There might be relevant details there:

https://forum.antennapod.org/t/antennapod-2-4-release-notes/1300/1

[antennapod-bot]

This pull request has been mentioned on AntennaPod Forum. There might be relevant details there:

https://forum.antennapod.org/t/antennapod-2-4-release-notes/1300/3