teoz: Support notes on references

[The-Lum]

Hi PlantUML team,

To continue:

• Support notes on references #1382

If Teoz is the main target:

• Could you manage notes on ref. with Teoz?

OK with puma

@startuml
participant Alice
actor Bob

Alice -> Bob : hello

ref over Bob
  This can be on
  several lines
end ref

note right: This is a note
@enduml

KO with teoz

@startuml
!pragma teoz true

participant Alice
actor Bob

Alice -> Bob : hello

ref over Bob
  This can be on
  several lines
end ref

note right: This is a note
@enduml

Thanks for the enhancement,
Regards,