[Feature]: Implement ConnectorExtensions

[samatstariongroup]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of the SysML2.NET
• I have searched open and closed issues to ensure it has not already been reported

Description

The ConnectorExtensions class in SysML2.NET/Extend/ConnectorExtensions.cs contains 6 extension method(s) that compute derived properties for the IConnector interface. These methods currently throw NotSupportedException and need to be implemented.

Checklist

• List<IAssociation> ComputeAssociation(this IConnector)
• List<IFeature> ComputeConnectorEnd(this IConnector)
• IType ComputeDefaultFeaturingType(this IConnector)
• List<IFeature> ComputeRelatedFeature(this IConnector)
• IFeature ComputeSourceFeature(this IConnector)
• List<IFeature> ComputeTargetFeature(this IConnector)

System Configuration

• SysML2.NET version: 0.19.0
• Source file: SysML2.NET/Extend/ConnectorExtensions.cs