Overhaul of model query and general ResolverClient improvements.

[digimaun]

• Renames resolverclient CLI to dmrclient and updates CLI descriptions/help.
• show command changed to show the fully qualified path to model content
• Added resolve command which does what the prior show did.
• validate command is unchanged.
• Updates all readme examples
• Overhaul/refactor of model query process to collect model KPI's.
• Added ability for client to validate DTMI format (and format is validated prior to processing)
• Added GetPath ResolverClient method (which is used in the CLI show command and internally by fetchers)
• Numerous test additions and improvements
• Updates Parser to 3.12.5