implement CLI init cluster, add SSH and WireGuard cluster connectors

internal/cli/machine.go

@@ -1,11 +1,8 @@
 package cli
 
-import "uncloud/internal/cli/config"
-
-type Machine struct {
-	connConfig config.MachineConnection
-}
-
-func NewMachine(connConfig config.MachineConnection) *Machine {
-	return &Machine{connConfig: connConfig}
+type RemoteMachine struct {
+	User    string
+	Host    string
+	Port    int
+	KeyPath string
 }