v0.7.0: pure C core + Zephyr module

- Extract all decode/decrypt into a dependency-free C99 core
  (include/victronble.h, src/victronble_core.c): victronble_decode(),
  is_product_adv/key_matches pre-filters, NAN sentinels, LE accessors.
- AES-128-CTR behind a hook: weak-symbol bundled tiny-AES default,
  runtime override (victronble_set_aes_ctr) for PSA/mbedTLS/hardware.
- Arduino VictronBLE class becomes a thin wrapper over the core
  (registry + nonce dedup + rate limit); public C++ API unchanged,
  NAN converted back to the legacy 0 convention.
- Host test vectors (tests/vectors): openssl-generated ciphertext,
  independent of the bundled AES; all five payload shapes + negatives.
- Zephyr module: zephyr/module.yml + Kconfig (CONFIG_VICTRONBLE) +
  observer backend (victronble_zephyr.{h,c}) — scan cb pre-filters and
  queues, dedicated decode thread, listener callbacks, slow passive
  scan defaults, stats counters. docs/ZEPHYR_PORT.md records the plan.
- library.properties: fix URL (gitea, not the nonexistent GitHub).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

library.properties

@@ -1,11 +1,11 @@
 name=VictronBLE
-version=0.6.1
+version=0.7.0
 author=Scott Penrose
 maintainer=Scott Penrose <scottp@dd.com.au>
 sentence=Portable library for reading Victron Energy device data via BLE on ESP32/S3/C3 and nRF52 (nRF52840/nRF52832)
 paragraph=Read data from Victron SmartSolar, SmartShunt, BMV, inverters, Blue Smart AC chargers and other devices using Bluetooth Low Energy advertisements. Runs on ESP32, ESP32-S3, ESP32-C3 and nRF52 (nRF52840, nRF52832 — Bluefruit or Seeed cores) with no external crypto dependency. Supports multiple devices simultaneously with no pairing required.
 category=Communication
-url=https://github.com/SH3D/VictronBLE
+url=https://gitea.sh3d.com.au/Sh3d/VictronBLE
 architectures=esp32,nrf52
 depends=
 includes=VictronBLE.h