Setup check for sqlite module for full text search

[juliusknorr]

Nextcloud 28 comes with an API to register setup checks, where it would be nice to give the admin a hint to enable the sqlite module for full text search in case it is not. Could also be used to indicate if the circles app as a dependency is missing.

Reference PR nextcloud/server#32550 (documentation still pending)

[juliusknorr]

@hweihwang I think this could be a good first coding task.

[juliusknorr]

As a more isolated reference implementation nextcloud/logreader@cf6de7f