[Feature]: Implement InstantiationExpressionExtensions

[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 InstantiationExpressionExtensions class in SysML2.NET/Extend/InstantiationExpressionExtensions.cs contains 2 extension method(s) that compute derived properties for the IInstantiationExpression interface. These methods currently throw NotSupportedException and need to be implemented.

Checklist

• List<IExpression> ComputeArgument(this IInstantiationExpression)
• IType ComputeInstantiatedType(this IInstantiationExpression)

System Configuration

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