Create Arduino I2C slave devices, as well as its I2C Drivers with Template Classes.

TemplateI2CSlave:

• Class-templated extension of I2C device.
• No work done during RequestOutput, except copying a pre-set buffer to the I2C buffer.
• Very light RequestEvent processing with optional async receiver.
• Base features:
  • Get Device Id.
  • Device Reset.

TemplateI2CDriver:

• Class-templated extension of I2C driver.
• Async requests enable any I2C slow-to-respond device to work with a co-op delay between request write and read.