[install][setup][tests][upgrade] Add optional systemd-boot support

[GuestSneezeOSDev]

Describe the bug or feature An image type which uses systemd

Issue Type

• [ ] Bug Report
• [x] Feature Request
• [ ] Documentation
• [ ] Question
• [ ] Other [Please specify]

To Reproduce Steps to reproduce the behavior:

1. Not an issue

Expected behavior Not an issue

Screenshots If applicable, add screenshots to help explain your problem.

System information (please complete the following information):

• Version: [4.2.0/5.0.0]
• Image type: [Preformance]
• Computer type: [PC]
• Graphics vendor: [Intel]
• Graphics card: [Intel Haswell]
• Drive type: [NVMe]
• Drive connection to PC: [USB]

Additional context Add any other context about the problem here.

[LukeShortCloud]

Do you mean to use systemd-boot instead of grub for the bootloader? We use systemd for managing our services already.

[GuestSneezeOSDev]

I meant for the bootloader I am more used to Arch Linux than other Linux Distro's

[LukeShortCloud]

I'll look into adding it. I'm thinking it'll be configured by a new environment variable: WINESAPOS_BOOTLOADER=grub (default) or WINESAPOS_BOOTLOADER=systemd-boot.

[GuestSneezeOSDev]

Thanks

[GuestSneezeOSDev]

Use bootctl

[GuestSneezeOSDev]

I think i can implement it in my latest PR