Resolve node_modules using the node resolution algorithm

[dan-cooke]

Is your feature request related to a problem? Please describe.
Right now the framework does not support monorepos, so we cannot have nested configs

apps/
      lambda
            - app.arc
       other-service
            - app.arc
node_modules

If I try to run npx arc init in any of these directories I get "Cannot find plugin 'architect/plugin-typescript'! Are you sure you have installed or created it correctly?"

It seems that arc is just looking for a sibling node_modules directory, instead of trying to resolve modules using the tried and tested resolve function from node.