Upstream OnionCircuits AppArmor profile

In Tails 2.10, anonym introduced an AppArmor profile for OnionCircuits. That’s great! Now, IMO our commitment to upstreaming our stuff implies we should have this profile included in the upstream Git repo, and installed by the Debian package.

Feature Branch: bugfix/12170-drop-obsolete-onioncircuits-AppArmor-profile, https://salsa.debian.org/tails-team/tails/merge_requests/17

Related issues

Blocks #16209

Original created by @intrigeri on 12170 (Redmine)

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