fix(vm-creation): ensure whiptail VMID inputbox is pre-filled with a valid and available ID
- Replaced hardcoded NEXTID usage with a new get_valid_nextid() function
- Ensures no collision with existing VMs, LXCs or orphaned LVM volumes
- Improves user experience by properly pre-filling whiptail inputbox
- Automatically skips invalid IDs instead of failing on alloc
* add API to debian-vm.sh
* [API] Add API calls to VMs
* [API] Add API calls to VMs
* [API] Add API calls to VMs
* [API] Add API calls to VMs
* [API] Add API calls to VMs
* debian-vm.sh
Co-authored-by: bvdberg01 <[email protected]>
* updates
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Co-authored-by: bvdberg01 <[email protected]>
Co-authored-by: Rögl-Brunner Michel <[email protected]>