BSSID attribute read is not supported in wifi_network_diagnostics_server.cpp

[praveenCY]

Problem

BSSID attribute read and related API link for platform are missing in wifi_network_diagnostics_server.cpp
Other attributes like channel_number, RSSI read is supported in the wifi_network_diagnostics_server.cpp properly

Missing GetWiFiBSSID(?) interface functions

[praveenCY]

Looks like this support is merged as part of PR : #11616 to master now
@yufengwangca : please close this if this is already supported

[yufengwangca]

#14755

yufengw@yufengw-SEi:~/connectedhomeip/out/debug/standalone$ ./chip-tool wifinetworkdiagnostics read bssid 12344321 0
.....
[1643913778.845776][878141:878146] CHIP:DMG: ReportDataMessage =
[1643913778.845800][878141:878146] CHIP:DMG: {
[1643913778.845804][878141:878146] CHIP:DMG: AttributeReportIBs =
[1643913778.845812][878141:878146] CHIP:DMG: [
[1643913778.845817][878141:878146] CHIP:DMG: AttributeReportIB =
[1643913778.845825][878141:878146] CHIP:DMG: {
[1643913778.845830][878141:878146] CHIP:DMG: AttributeDataIB =
[1643913778.845836][878141:878146] CHIP:DMG: {
[1643913778.845842][878141:878146] CHIP:DMG: DataVersion = 0x51ac8517,
[1643913778.845848][878141:878146] CHIP:DMG: AttributePathIB =
[1643913778.845856][878141:878146] CHIP:DMG: {
[1643913778.845862][878141:878146] CHIP:DMG: Endpoint = 0x0,
[1643913778.845869][878141:878146] CHIP:DMG: Cluster = 0x36,
[1643913778.845878][878141:878146] CHIP:DMG: Attribute = 0x0000_0000,
[1643913778.845884][878141:878146] CHIP:DMG: }
[1643913778.845892][878141:878146] CHIP:DMG:
[1643913778.845901][878141:878146] CHIP:DMG: Data = [
[1643913778.845910][878141:878146] CHIP:DMG: 0x20, 0x2, 0x0, 0x0, 0x3, 0x56,
[1643913778.845920][878141:878146] CHIP:DMG: ]
[1643913778.845927][878141:878146] CHIP:DMG: },
[1643913778.845936][878141:878146] CHIP:DMG:
[1643913778.845942][878141:878146] CHIP:DMG: },
[1643913778.845950][878141:878146] CHIP:DMG:
[1643913778.845956][878141:878146] CHIP:DMG: ],
[1643913778.845964][878141:878146] CHIP:DMG:
[1643913778.845970][878141:878146] CHIP:DMG: SuppressResponse = true,
[1643913778.845976][878141:878146] CHIP:DMG: InteractionModelRevision = 1
[1643913778.845980][878141:878146] CHIP:DMG: }
[1643913778.846065][878141:878146] CHIP:TOO: Endpoint: 0 Cluster: 0x0000_0036 Attribute 0x0000_0000
[1643913778.846082][878141:878146] CHIP:TOO: bssid: 200200000356