Add references to operations and resources#310

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srchase wants to merge 4 commits intosmithy-lang:masterfrom srchase:unreferenced-tests

+413

Commits on Mar 12, 2020

Fix mqtt trait entity references
Chase Coalwell
committed
Fix aws-trait entity references
Chase Coalwell
committed
Fix smity-linters entity references
Chase Coalwell
committed
Fix smity-model validator entity references
Chase Coalwell
committed