Start of modernization of skyflake.

[makuru-dd]

goals

• [ ] removal of unneeded code fragments.
  • [x] Went through with my linter and removed unneeded code.
• [x] Make it compatible with the newest version of nixpkgs.
  • [x] We need to update nomad or change and package a different fork of nomad because the switch to Business Source License 1.1.
• [ ] Allow usage with seaweedfs, see issue #9.
• [ ] Add firewall with nftables.
• [ ] fix networking because of the removal of addressConfig.
  • trace: warning: Using 'addressConfig' is deprecated! Move all attributes inside one level up and remove it.

Please look at it, @astro and tell me what needs to be changed to archive my goals.