Samples describing full driver capabilities

[KajbaM]

Context

Currently driver repository only contains sample for sampling microphone using standard dmic zephyr API. There should also be samples describing how to use full driver functionality (AAD modes configuration, interrupt handling, etc.)

Required steps / Implementation details

• Add more samples showing how to use full driver functionality.
• Determine what targets should samples be compatible with due to 1.8V voltage level microphone uses, we should chose target development kits that give us ability to not have to mess to much with hardware.

Definition of Done

• Samples are added to show user how to use full functionality of driver.
• Make sure all documentation is easy to understand and fully describes use of driver.
• Code is reviewed and merged.

[vid553]

+1

The driver should support all microphone modes and have samples that demonstrate each of them. Each sample should demonstrate that use case from start to finish (boot, run it and at the end go to low power mode or turn off).