v21.06 service pack 1

Creating a new issue for what to do in the first service pack of v21.06. The firewall has two important issues open that need to be resolved before we can push it to a stable branch, so let's not make it part of the release, but part of the first service pack instead. Once v21.06 (the release) is out, we probably find a few more things to add to the service pack.

• Firewall:

  • fix #1125 (closed) Firewall breaks networking in Anbox part of v21.06 release already
  • implement #1119 (closed) Build all main and community devices with firewall enabled
  • Backport all firewall related patches to v21.06.1 MR

• New Sxmo release 1.5: ping Sxmo folks ~2 weeks before releasing the SP to coordinate (see #1123 (comment 608543687))

• Bluetooth:

  • Supervise Bluetooth daemon to restore Bluetooth functionality if the daemon crashes: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/22662

    • @dylanvanassche claims this doesn't help: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/22662#note_169710

  • Enable MPRIS proxy for Bluetooth media keys pass through: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/22664

  • OBEX capabilities: !2245 (merged)

    • see: #1130 (comment 634444886)

• Allwinner devices:

  • Wireguard kernel support: !2357 (merged)