docs(readme): strip private-repo references, sync RKNN list to 2026-06-03 batch

docs(readme): restructure into MODNet (§1) and RVM (§2) chapters; drop frontmatter

docs(rvm): add §7.5 graph-surgery op-count delta (353→317, −36 nodes)

docs: refresh last-updated date and add missing oplv3 RKNN entries

chore: README improve

docs: add RVM model registry (ONNX + RKNN) with quality summary

docs: Reorganize and formalize MODNet README with comprehensive model registry

Put it in the InstanceNormalization OP folded photographic modified ONNX

initial commit