Update 5.7.0

• Add method to support SX126x Rx Boosted Gain mode (#663 by Andrew Moroz)
• [SX127x] Set minimum bit rate to 0.5 kbps (#665)
• [SX127x] Fixed packet length not proagating correctly (#666)
• [SX126x] Added support for AFSK transmission
• [MOD] Added stream SPI transfer
• [MOD] Port 16-bit address from ax5x43 dev
• [MOD] Use SPI stream for register read/write
• [SX128x] Use Module SPI stream
• [SX126x] Use Module SPI stream
• [SX126x] Added undocumented registers
• [SX126x] Implemeted device type string check
• [SX126x] Add irqFlags and irqMask parameters to receive methods (#684 by @GUVWAF)
• Fix args to begin() in SX12xx settings examples (#688 by @brghena)
• [SX126x] Added option to control XTAL/TCXO via member variable
• [SX126x] Fixed bug in getDeviceErrors
• [SX126x] Added more verbose calibration result check (#689)
• [SX126x] Set SX1262 to accept SX1261 device string (#683)
• [SX126x] Added more LBT/scan registers
• Added further explanation of the -707 error code (#691)