Detect backend crashes and notify about them in GUI
Sometimes jami backend crashes, but it can only be seen from syslog, for example:
kernel: WebKitWebProces[5027]: segfault at 0 ip 00007fe02026334d sp 00007ffcc5516920 error 4 in libwebkit2gtk-4.0.so.37.33.5[7fe01f7e1000+2a31000]
kernel: Code: 88 06 00 00 c3 0f 1f 84 00 00 00 00 00 48 39 b7 88 06 00 00 74 57 41 54 49 89 fc 55 48 89 f5 53 c7 87 c0 01 00 00 ff ff ff ff <48> 8b 06 48 89 fe 48 89 ef ff 50 20 49 8b 9c 24 a0 00 00 00 41 8b
It would be nice to have some indication in GUI too. I suspect that sometimes audio disappears due to some internal crash, but it is not very easy to track down such issue.