Labels for all components and for connections about draft HOT 2 CLOSED

type Connection struct {
  Origin string `yaml:"origin"`
  Targets []struct {
    ID          string `yaml:"id"`
    Label       string `yaml:"label,omitempty"`
    Color       string `yaml:"color,omitempty"`
    Dashed      bool   `yaml:"dashed,omitempty"`
    Dir         string `yaml:"dir,omitempty"`
    Highlight   bool   `yaml:"highlight,omitempty"`
  } `yaml:"targets"`
}