Initial linting of rules json files

[smithgp]

• validate macro namespace:name is unique across all the rulesType files
• validate constants names are unique across all the rulesType files
• validate rules names are unique across all the rulesType files
• warn if a macro doesn't have either a return or 1+ actions (since it's not very useful otherwise).
• show error if template has both rulesDefinition and 1+ rules, since that will cause on error on push/deploy