Patch 6.4.1

• [LoRaWAN] Fixed duty cycle enable ignored
• [LoRaWAN] Fix possible integer overflow
• [LoRaWAN] Fix MAC command initialization
• [LoRaWAN] Simplify variable length arrays
• [SX126x] Fix txMode made private
• [STM32WL] Fix Module pinter
• [LoRaWAN] Properly size fopts buffer
• [SX1233] Fix incorrect exclude macro guard (#929)
• [LoRaWAN] Fix session restore throwing unnecessary error (by @StevenCellist)
• add Pico HAL (by @cameron-goddard)
• [LoRaWAN] Improve channel masks for fixed bands (by @StevenCellist)
• [LoRaWAN] Fix fixed band CFList processing (by @StevenCellist)
• [LoRaWAN] Fix rejoining during active session (by @StevenCellist)
• [LoRaWAN] Fix dynamic-band non-ADR session persistance (by @StevenCellist)
• [LoRaWAN] Fix setDatarate function (by @StevenCellist)
• [LoRaWAN] Keep Dev/JoinNonce on OTAA wipe with same credentials (by @StevenCellist)
• [LoRaWAN] Fix Tx power calculation (by @StevenCellist)
• [LLCC68] Fixed set data rate for LLCC68 (#946)
• [LoRaWAN] Added ADR data rate check (#946)