Release v1.3.2: Add NessoN1/NanoC6 support, migrate tests, and fix bugs

[GOB52]

Summary

Changes since v1.3.1 for the v1.3.2 release.

• NessoN1 / NanoC6 (ESP32-C6) support
  • Update all examples to use In_I2C/Ex_I2C with M5HAL SoftwareI2C for GROVE port
  • Add NessoN1/NanoC6 build environments to CI
• Test migration — Migrate to new test_template API and unify periodic measurement validation
• New API — Add no-arg startPeriodicMeasurement() for SHT30/SHT40
• New example — Add Paper example for built-in SHT30 on M5Paper
• Dependency update — Bump M5UnitUnified to >=0.4.0
• CI updates — Update clang-format-action to v4.16.0, pin pioarduino version, unify Dial test envs
• Bug fixes — Fix minor issues in QMP6988/BME688, Doxyfile quoting, add I2C_Class guards, fix typos