New Settings/Improvements/Error Corrections

New/Changed AudioKitSettings.h configuration settings:

• New WORKAROUND_MIC_LINEIN_MIXED to activate/deactivate the functionality
• New WORKAROUND_ES8388_LINE1_GAIN to define the gain using the values from es_mic_gain_t
• New I2C_CLOCK_SPEED
• ES8388_DEFAULT_INPUT_GAIN is using the values from es_mic_gain_t

Improvements:

• Cleanup dependency to ets_print()
• allows gains to be overridden by platformio.ini
• More reliable determination of ESP32 processor type for S3,S2 or C3-
• Call setSpeakerActive(false) on end() to save power
• Replace ESP32 IDF calls with consistent Arduino API calls
• support i2s_active flag in config with example

Error Corrections

• Corrected compile error in example sdmmc_begin.ino (added missing semicolon)
• Prevent compile error on old ESP32 Releases