[IMP] firmware: Application Bug fixes (TCU Emulation / BT / Comfort) * Fix out of bounds issue when calculating dimmer state * Resolve issue where LATE2 was being pulled low on v1 boards (TEL_MUTE and SPDIF_RST fix) * Fix call answer / end API usage

[IMP] firmware: Application Bug fixes * Call API for `Play` when returning from a call * Fix issue with incorrect pin being set for TEL_MUTE

[IMP] firmware: Application BC127 Improvements * Resolve issue with BM83 handler being errantly executed in BC127 mode * Fix bug with HFP being closed repeatedly * Add in BC127 CLI commands again

[IMP] firmware: Application BC127 Improvements * Break out BC127 events into their own functions for ease of maintenance * Add AT command function * Remove CLIP CSCS AT commands from core code and move them to the handler

[IMP] firmware: Application IBus Improvements * Consistency in defines * Set value for IBUS_DEVICE_BMBT_Button_TEL_Press * Add debug for emulated button presses from GT

[IMP] firmware: Application Handler Improvements * Break out I/K-Bus implementation from the core handler in handler_ibus.c

[IMP] utility: console_firmware_tool * Update switch for Serial Number Burning to --writesn for consistency

[IMP] harcware: Hardware version 2.1 * Swap U4/S-1212BC0 for SOT23-5 package * Update resistor value for R19 to resolve bug with board version identification

[IMP] firmware: Application v1.2.1 Main Code * Add new defines for HW V2 Pins * Configure new HW V2 pins * Correctly Boot BM83 and DIT4096 ICs * Add flag for successful boot

[IMP] firmware: Application v1.2.1 Locale Library * Fix Indent level for dutch language