refactor: unify sim/trace_fmt.py into trace/ package

Merges the richer sim trace formatter into the shared trace/ package:
- trace/decode_iso14a.py — new, 14443-A request/response decoders
- trace/decode_iso15.py — enhanced with NXP annotations, IC identification,
  GET SYSTEM INFO parsing, decode_15693_nxp()
- trace/format.py — TraceFormatter class (mode-aware, CRC handling,
  SIGWINCH resize) + format_sniff_line convenience wrapper
- sim/trace_fmt.py → backward compat shim importing from trace/

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_sim_trace_fmt.py

@@ -41,7 +41,7 @@ class TestDecode15693Request:
     def test_read_multiple_block(self):
         payload = bytes([0x22, 0x23]) + b"\x01" * 8 + bytes([0x00, 0x0D])
         result = decode_15693(0, payload)
-        assert result == "READ MULTIPLE BLOCK #0+13"
+        assert result == "READ MULTIPLE BLOCKS #0+13"
 
     def test_reset_to_ready(self):
         payload = bytes([0x22, 0x26]) + b"\x01" * 8