Features

* docker authentication lookup "token" and "access_token"
* fix mkdirall failing on objects dirs - which are OK if they already exist
* use mkdir all instead of mkdir for creating objdir etc
* set 'ExtKeyUsageCodeSigning' as key usage policy when validating signature chain; improve logging of pvslib

Refactor
* libpvr: Solve all linter errors inside libpvr

* ship arm64 binaries
* fix multiarch support for docker repos that do not ship default architecture image (e.g. no linux/amd64)
* pvr app add support for source types 'pvr' and 'rootfs'
* add support for pvr dm-apply and dm-convert to convert squashfs volumes to dm-verity backed volumes
* introduce PVR_LXC_CGROUP_V1 argument to src.json for configuring lxc cgroup lines
* add support for runlevel 'data' containers
* improve visual feedback on console when posting and getting objects from a slow endpoint (e.g. local XP)
* fix pvr diff to use canonical output to avoid false positive "diffs"
* introduce PVR_LXC_CGROUP_DEVICES_WHITE to set devices cgroup whitelisting
* introduce support for PV_ROLES mgmt and none
* add support for pvr sig subcommand to allow signing with certificates and vert bundles

* fix interactive auth regression after adding support for anonymous flow
* add feedback when retrieving object meta before the downloads start
* add support for PV_LXC_EXTRA_ENV args in src.json

* fix setting user meta using pvr dev set

* add support for local XP
* add "inspect" command
* add support for anonymous cloning