qm-snapshot: add page (#8949)

pages/linux/qm-snapshot.md

@@ -0,0 +1,16 @@
+# qm snapshot
+
+> Create virtual machine snapshots.
+> More information: <https://pve.proxmox.com/pve-docs/qm.1.html>.
+
+- Create a snapshot of a specific virtual machine:
+
+`qm snapshot {{vm_id}} {{snapshot_name}}`
+
+- Create a snapshot with a specific description:
+
+`qm snapshot {{vm_id}} {{snapshot_name}} --description {{description}}`
+
+- Create a snapshot including the vmstate:
+
+`qm snapshot {{vm_id}} {{snapshot_name}} --description {{description}} --vmstate 1`