SCS: Add support for QoS Characteristics in SCS request

SCS: Add support for QoS Characteristics in SCS request

Add support to configure the mandatory QoS Characteristics parameters
per IEEE P802.11be/D4.0, 9.4.2.316 (QoS Characteristics element), in SCS
request:
 - Minimum Service Interval
 - Maximum Service Interval
 - Minimum Data Rate
 - Delay Bound

Enable STA SCS traffic descriptor support for EHT connection when the
connected EHT AP advertises SCS traffic descriptor capability in the EHT
Capabilities element.

Signed-off-by: Purushottam Kushwaha <quic_pkushwah@quicinc.com>