[Feature]: Implement NamespaceExtensions

[antoineatstariongroup]

What type of issue is this?

• Bug report
• Feature request

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

Implement extension methods for the INamespace interface:

• ComputeImportedMembership
• ComputeMember
• ComputeMembership
• ComputeOwnedImport
• ComputeOwnedMember
• ComputeOwnedMembership
• ComputeNamesOfOperation
• ComputeVisibilityOfOperation
• ComputeVisibleMembershipsOperation
• ComputeImportedMembershipsOperation
• ComputeMembershipsOfVisibilityOperation
• ComputeResolveOperation
• ComputeResolveGlobalOperation
• ComputeResolveLocalOperation
• ComputeResolveVisibleOperation
• ComputeQualificationOfOperation
• ComputeUnqualifiedNameOfOperation

Steps to Reproduce

System Configuration

• SysML2.NET version:
• Environment (Operating system, version and so on):
• .NET Framework version:
• Additional information: