Description of Changes

Persist appvms 'appuser' home by default.

If appusers' home directories or files are explicitly defined in an appvm instance via the storagevm options, this setting will be ineffective - only the defined files and directories are then persisted. This is generally useful as apps often create app-specific folders.

Also adds shared folder for flatpack-vm.

Type of Change

• New Feature
• Bug Fix
• Improvement / Refactor

Related Issues / Tickets

Checklist

• Clear summary in PR description
• Detailed and meaningful commit message(s)
• Commits are logically organized and squashed if appropriate
• Contribution guidelines followed
• Ghaf documentation updated with the commit - https://tiiuae.github.io/ghaf/
• Author has run make-checks and it passes
• All automatic GitHub Action checks pass - see actions
• Author has added reviewers and removed PR draft status

Testing Instructions

Applicable Targets

• Orin AGX aarch64
• Orin NX aarch64
• Lenovo X1 x86_64
• Dell Latitude x86_64
• System 76 x86_64

Installation Method

• Requires full re-installation
• Can be updated with nixos-rebuild ... switch
• Other: both work, in case of nixos-rebuild the old file structures are still present

Test Steps To Verify:

1. ...