refactor(vars): add system/hypervisor dict inputs

inventory_libvirt_example.yml

@@ -2,7 +2,8 @@
 all:
   vars:
     install_type: "virtual"
-    hypervisor: "libvirt"
+    hypervisor:
+      type: "libvirt"
     install_drive: "/dev/vda"
     boot_iso: "/var/lib/libvirt/images/archlinux-x86_64.iso"
   children:
@@ -10,47 +11,55 @@ all:
       hosts:
         web01.example.com:
           ansible_host: 192.168.122.10
-          hostname: "web01.example.com"
-          os: "debian12"
+          os: "debian"
+          os_version: "12"
           filesystem: "ext4"
-          vm_cpus: 2
-          vm_memory: 2048
-          vm_size: 30
-          vm_ip: 192.168.122.10
-          vm_nms: 24
-          vm_gw: 192.168.122.1
-          vm_dns: 1.1.1.1
+          system:
+            name: "web01.example.com"
+            cpus: 2
+            memory_mb: 2048
+            ip: 192.168.122.10
+            prefix: 24
+            gateway: 192.168.122.1
+            dns_servers: 1.1.1.1
+            disks:
+              - size: 30
           extra_packages:
             - nginx
             - fail2ban
         vault01.example.com:
           ansible_host: 192.168.122.11
-          hostname: "vault01.example.com"
           os: "ubuntu-lts"
           filesystem: "btrfs"
-          vm_cpus: 2
-          vm_memory: 4096
-          vm_size: 40
-          vm_ip: 192.168.122.11
-          vm_nms: 24
-          vm_gw: 192.168.122.1
-          vm_dns_search: "example.com"
+          system:
+            name: "vault01.example.com"
+            cpus: 2
+            memory_mb: 4096
+            ip: 192.168.122.11
+            prefix: 24
+            gateway: 192.168.122.1
+            dns_search: "example.com"
+            disks:
+              - size: 40
           luks_enabled: true
           luks_passphrase: "CHANGE_ME"
           luks_auto_decrypt_method: "keyfile"
-          firewalld_enabled: false
+          firewall_enabled: false
         rhel9.example.com:
           ansible_host: 192.168.122.12
-          hostname: "rhel9.example.com"
-          os: "rhel9"
+          os: "rhel"
+          os_version: "9"
           filesystem: "xfs"
-          vm_cpus: 4
-          vm_memory: 8192
-          vm_size: 80
-          vm_ip: 192.168.122.12
-          vm_nms: 24
-          vm_gw: 192.168.122.1
-          vm_dns: "1.1.1.1,1.0.0.1"
-          vm_path: "/srv/libvirt/images"
+          system:
+            name: "rhel9.example.com"
+            cpus: 4
+            memory_mb: 8192
+            vlan: "100"
+            ip: 192.168.122.12
+            prefix: 24
+            gateway: 192.168.122.1
+            dns_servers: "1.1.1.1,1.0.0.1"
+            path: "/srv/libvirt/images"
+            disks:
+              - size: 80
           rhel_iso: "/var/lib/libvirt/images/rhel-9.4-x86_64-dvd.iso"
-          vlan_name: "100"