SDS examples for Alif

[ReinhardKeil]

Complete the SDS examples for Alif targets with meaningful examples.

We may use ML Models that are part of https://github.com/Arm-Examples/cmsis-mlek-examples/tree/main/Alif
Another good starting point could be https://github.com/eembc/audiomark

[MiloradCvjetkovic]

There is also an example provided by EI at : https://github.com/edgeimpulse/EI-SDS-inference-example