Renesas/RetinaNet-R101-ONNX

1# upstream was `onnx/retinanet-9`, which does not exist; the README front matter2# already had the correct `onnxmodelzoo/retinanet-9`.3# format.version was `1.6.0` (the ONNX IR version is in fact 6); replaced by opset,4# which was already correctly recorded as 9.5# Input is 480x640 and the 720/36-channel outputs imply 80 classes x 9 anchors and6# 4 box coords x 9 anchors — both read from the graph.7 8model:9  name: retinanet-r10110  display_name: RetinaNet-R10111  upstream: onnxmodelzoo/retinanet-912  source:13    kind: onnx-model-zoo14    id: retinanet-915    url: https://github.com/onnx/models16 17architecture:18  family: retinanet   # lineage only — no version, no size19  backbone: resnet10120  dataset: coco21  input_resolution: 480x64022  num_classes: 8023  modality:24    - vision25  parameters: 57.1M26  parameters_source: measured27  parameters_note: >-28    57.07M counted from fp32/retinanet-9.onnx initializers29 30format:31  type: onnx32  opset: 933 34tasks:35  - object-detection36