feat: add NRNTN-TAI-Information protocol IE/extension ID

Add the NGAP protocol IE/extension identifier 287 assigned to
NRNTN-TAI-Information per 3GPP TS 38.413. This IE-extension is
optionally carried inside UserLocationInformationNR.IEExtensions
and indicates that the UE is being served over NR Non-Terrestrial
Network access.

The full Rel-17 IE type (NRNTNTAIInformation SEQUENCE) is not yet
defined here; this commit only adds the bare ID so that callers
checking presence of the extension can reference a canonical
constant rather than hard-coding 287. The type definition and the
remaining Rel-16/17/18 IE IDs are expected to land as part of the
broader NGAP release uplift.

Used by omec-project/amf#684 (NTN access detection).

Signed-off-by: Vinod Patmanathan <vinod.patmanathan@forsway.com>

Author: Vinod Patmanathan

ngapType/ProtocolIEID.go

@@ -169,4 +169,5 @@ const (
 	ProtocolIEIDSecurityResult                             int64 = 156
 	ProtocolIEIDENDCSONConfigurationTransferDL             int64 = 157
 	ProtocolIEIDENDCSONConfigurationTransferUL             int64 = 158
+	ProtocolIEIDNRNTNTAIInformation                        int64 = 287
 )