ST6RI-739 Model-library-related issues from KerML FTF Ballot #5

[seidewitz]

This PR implements resolutions of issues from KerML FTF Ballot 5 that called for updates to library models.

Resolutions of the following issues are implemented in this PR:

• KERML-45 LinkObject is irreflexive
• KERML-46 Intersection missing for some multiple specializations
• KERML-120 FlowTransferBefore needs end feature declarations

In addition, the .meta.json and .project.json files in the model library directories have been updated to reflect the new normative KerML URI https://www.omg.org/spec/KerML/240201 and the versions have been updated to 1.0.0-beta2.

[conradbock]

Noticed another error in KerML-46 for the next FTF.