Tunnel implementation, allow using ssh on connection screen

pkg/shared/ssh_info.go

@@ -0,0 +1,17 @@
+package shared
+
+import (
+	"fmt"
+)
+
+type SSHInfo struct {
+	Host     string `json:"host,omitempty"`
+	Port     string `json:"port,omitempty"`
+	User     string `json:"user,omitempty"`
+	Password string `json:"password,omitempty"`
+	Key      string `json:"key,omitempty"`
+}
+
+func (info SSHInfo) String() string {
+	return fmt.Sprintf("%s@%s:%s", info.User, info.Host, info.Port)
+}