Add support for FNSRI HS-02(A/B)

Device name: FNSRI HS-02A / FNSRI HS-02B Device type: Soldering iron Approximate price: $130 (Canadian moose nickles) Example purchase location: Amazon

Hardware details: Processor: Nation N32L403 (ARM CORTEX-M4) @ 64 MHZ Flash: 64 or 180 KB (not sure yet) SRAM: 16 or 24KB (not sure yet) Temperature sensor: Thermocouple (JBC 210 tip compatible) Cold junction compensation sensor: not sure where, working on it Pinmap: Working on it

Soft requirements: USB-PD: yes, WCH-CH224K open source schematics: no Vendor friendliness: unclear Hardware PWM: unclear, mosfet is AOSMD 4407A STM32 clone: nope!

USB-QC: no DC in: no BLE: no

I have an HS-02B that I have already disassembled and I plan to create a pinmap from this. High resolution images and my findings will follow in the coming days.