Require access type to be included in bug report

Inspired by https://github.com/jellyfin/jellyfin/issues/1085#issuecomment-473833591

It seems that the issue with "setup wizard" described there is only prominent when reverse-proxied, not when accessed directly. So this type of information should be gathered in the bug report as well.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -30,6 +30,7 @@ assignees: ''
  - OS: [e.g. Docker, Debian, Windows]
  - Browser: [e.g. Firefox, Chrome, Safari]
  - Jellyfin Version: [e.g. 10.0.1]
+ - Jellyfin access: [direct, reverse proxy via nginx, reverse proxy via apache, etc.]
 
 **Additional context**
 <!-- Add any other context about the problem here. -->