Purpose

Small PR that adds related Connector Pins to selection when user uses Tab key to select neighboring nodes. Includes unit test thanks to @dnenov.
Supersedes #15007 (build keeps failing)

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

When selecting a node and hitting "tab" it automatically adds the connected nodes to the selection. This is super handy for moving groups of nodes around. The selection will now include not only the next connected node, but all pins of the connectors at the same time.

Reviewers

@dnenov
@reddyashish

FYIs

@Amoursol