Log all services to memory (#4587)

* Log all services to RAM

* Fix tests workdir

* Rotate logs when they reach 10MB and keep only 1 archive

* Gracefully handle shutdown

* Add note about gracetime not working

* Fix logs permission, create fake logs for devcontainer

* Remove empty line

* Update docker/rootfs/etc/services.d/frigate/run

* Fix fake Frigate shebang

docker/rootfs/usr/local/bin/frigate

@@ -0,0 +1,5 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec 2>&1
+exec python3 -u -m frigate "${@}"