feat(schema): add frames and graph edge information

[eeberhard]

Description

• Draft application syntax 2.0 #147

As referenced in the original design spec, this adds two (non-breaking) enhancements to the draft schema, after which I would declare it ready to release as version 2-0-0.

Frames

Frames are quite simple to define:

frames:
  target:   # reference frame is "world" by default
    position:
      x: 0.5
      y: 0.0
      z: 1.0
    orientation:
      w: 1.0
      x: 0.0
      y: 0.0
      z: 0.0
  offset:
    reference_frame: target
    position:
      x: 0.5
      y: 0.0
      z: 1.0
    orientation:
      w: 1.0
      x: 0.0
      y: 0.0
      z: 0.0

Edges

The edge path information is stored under graph: edges: [edge_id]: path. By including the path sub-property, this leaves room for future expansion, for example to customize the position or content of an edge label. In practice it would look like this:

graph:
  positions:
    on_start:
      x: -40
      y: -20
    components:
      signal_point_attractor:
        x: 680
        y: 400
    buttons:
      button:
        x: -320
        y: 620
  buttons:
    button:
      on_click:
        set:
          parameter: linear_precision
          value: !!float 1.0
          component: signal_point_attractor
  edges:
    on_start_on_start_load_signal_point_attractor:
      path:
        - x: 360
          y: 20
        - x: 360
          y: 460
  sequence_sequence_event_trigger_0_load_signal_point_attractor:
    path:
        - x: 620
          y: 460
  button_on_click_set_parameter_signal_point_attractor:
    path:
        - x: 180
          y: 640
        - x: 180
          y: 460

Review guidelines

Estimated Time of Review: 5 minutes

Checklist before merging:

• Confirm that the relevant changelog(s) are up-to-date in case of any user-facing changes