Archinstall

Features:
* (Optional) Adds guessing country based off GeoIP-guessing via machines external IP
* New Default: Reorders mirrors based off `--country=<code>` if a gateway is found. Turn off by doing `--mirrors=0`

Main focus on cleaning up the `__main__` code and putting things into functions so that the [GUI](https://github.com/Torxed/archinstall_gui) can use the installation steps.

* Keep AUR support after installation is complete
* Phone Home feature, to signal to a master server when/if the installation is completed.
*(TODO: Add a start call to the phone home, and possibly progress)*
* Fixes Issue 22, now shows the file format when listing multiple drives/partitions for selection.
* Reworked sys_command to more behave like a bash terminal being fed inputs
* Bunch of bugfixes, among them were empty drives *(factory wiped disks)* caused a crash
* Adds commands executed into a command-log
* Some more error handling *(True / False returns from functions mainly)*

Support added for:
* AUR instructions in templates *(Slightly restricted to `yay` and `"<instruction>" : {"runas" : "aibuilder"}`)*
* Support for switching git branch in instructions *(primarily helps with debugging)*
* Improved guided installation by not jumping to formatting directly, now gives a few seconds to abort if settings looks fishy.

Known issues:
* `--rerun` flag seams to be acting a bit weird, this is mainly used for debugging, so not a deal breaker.

Fixes a temporary issue with systemd:
https://github.com/systemd/systemd/issues/13603#issuecomment-552246188

ae6a3a7
Pre-alpha test release.<br>
It works, but it ain't pretty.

Below is a binary compiled with `nuitka3 archinstall.py --follow-imports`.<br>
Haven't tested it, but putting it here for now.