Implement direct editing API

[juliusknorr]

nextcloud/server#17625

• Make sure that template creation is properly handled with the new approach from Use FileCreatedFromTemplateEvent to inject the already existing empty templates #1377

[juliusknorr]

From previous discussions, we need to verify the implementation on Desktop, Android and iOS, while desktop has higher probability to work out of the box as the others currently have existing special logic for office documents with Collabora.

[tobiasKaminsky]

When you need help from our side, we are happy to help.
We can also have a short call between both of us to coordinate it.
Right now I am unsure what to check :)

[Raudius]

When you need help from our side, we are happy to help. We can also have a short call between both of us to coordinate it. Right now I am unsure what to check :)

Sorry, forgot to push the PR! ;) #2405

I have tried testing it on Android but I cannot open the files (gets stuck on loading), however the endpoint seems to work when entered manually through the browser though. Also I believe the Android app has hardcoded support for creating office files (when Nextcloud office is installed).

[tobiasKaminsky]

Android/clients need to switch to new endpoint then, I think.
So I will test to switch entire Collabora usage from richdocuments endpoint to directEditing, same like with Text, right?

[juliusknorr]

• We need to wait for clients to be released to push this as otherwise there might be duplicate direct editing in the clients with the old and new approach

[juliusknorr]

This will be the shared library that also can be used to generate documentation on the message passing between clients and the different editor implementations:https://github.com/nextcloud/nextcloud-directediting