refactor: reorganize transponder models into pm3py/transponders/
Moves 23 IC-specific files (tag + reader models) from sim/ into
transponders/ organized by standard/manufacturer:
- transponders/hf/iso14443a/ — 14443-A base, MIFARE Classic, DESFire, NDEF
- transponders/hf/iso15693/ — 15693 base, Type5, NXP ICODE/NTAG5 hierarchy
- transponders/lf/ — LF base, EM4100, HID, T5577
- transponders/implants.py — xEM, xNT, xM1, FlexDF, NExT
sim/ retains infrastructure (Medium, RFFrame, SimSession, TableCompiler,
etc.) and backward-compat shims for each moved file. sim/__init__.py now
imports transponder classes from their canonical transponders/ locations.
751 tests passing, zero test changes needed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
18a992f3c7