homeassistant-os haos-vm DISK_SIZE="nG"

### 🌟 Briefly describe the feature

custom DISK_SIZE="G"

### 📝 Detailed description

Add pls custom DISK_SIZE="nG"

### 💡 Why is this useful?

I have big backups (~100G and it will be more) and it can't use 32 Gb hdd space.