[buildarmpkg][buildarmimg][buildrootfs][builddockerimg] use the new pacman-mirrors syntax and new mirror

Signed-off-by: Dan Johansen <strit@manjaro.org>

This is a huge change.
The current tools have a section for almst each device, which it's own partition setup. This is a huge chunk of code.
The commit  changes the partition layout of devices, so they are the same. So a unified partition layout scheme.
Also change the default labels of the partitions, since other OS's also uses BOOT and ROOT. Change it to BOOT_MNJRO and ROOT_MNJRO.
Also change how uboot gets flashed, in a case statement instead.
This saves alot of code lines and makes the function more readable.
Signed-offf-by: Dan Johansen <strit@manjaro.org>

Setting device specific settings require an update to the tools each time a setting needs to be changed.
Remove it, and use packages in community repo instead (eg. $DEVICE-post-install) to set these settings, because packages are easier to update and push out, than new versions of tools.
Signed-off-by: Dan Johansen <strit@manjaro.org>

This code is only in the tools, from when we tested out making rootfs to put on top of android with the Nexus 5X.
But it has not been used for about a year and not even looked at, since we got the PinePhone.
I deem it not important for the time being.
So remove the code for buildmobilefs entirely.
Signed-off-by: Dan Johansen <strit@manjaro.org>

[buildarmimg] change the order which packages gets installed in. Preparation for new post-install packages

Remove deployarmpkg, since we now use boxit and the old server is no more.
Remove buildarmimg, since it was broken anyway.
Rename buildarmoem to buildarmimg, since all images should be OEM images these days.
Remove some left over commented code in functions.sh
Update the readme
Signed-off-by: Dan Johansen <strit@manjaro.org>

[buildarmoem] enable pinephone-post-install service, instead  of pinebook-post-install on PinePhone and PineTab devices

Our new mirror structure supports multiple barnches. Stable, Testing and Unstable.
Make the tools that create things, like buildarmpkg and buildarmoem, able to utilize these.
Signed-off-by: Dan Johansen <strit@manjaro.org>

Buildarmpkg has a set mirror it uses for creating the rootfs.
This mirror uses the old repo structure and as such will 404 when trying to download the databases.

So make buildarmpkg use the new mirror structure.
And also remove the creation of ARM mirrorlist on the host, since it's not doing anything.
The mirrorlist from the pacman.conf.aaarch64 gets used instead.

Also prepare for some branch support. Default branch is set to stable.
Signed-off-by: Dan Johansen <strit@manjaro.org>

The tools where hardcoded to only use .xz compressed packages.
Change it to a wildcard, so it can support other formats, like .zst
Signed-off-by: Dan Johansen <strit@manjaro.org>

This makes it easier when we get branch support to build against a selected branch, instead of just stable all the time.
Signed-off-by: Dan Johansen <strit@manjaro.org>

And rename create_zip to compress, since we are not actually using zip anymore.
Signed-off-by: Dan Johansen <strit@manjaro.org>