Add global --json, --auth, && --silent flag support

[DavidWells]

To better support programatic use cases, this PR adds --json flag support for relevant commands.

This will disable normal CLI logging and only output json for the user to parse and use elsewhere

Example:

Depends on netlify/netlify-dev-plugin#224 & netlify/cli-utils#13

[DavidWells]

Todo:

• merge https://github.com/netlify/cli-utils/pull/13/files
• bump version here

[DavidWells]

Example commands:

Some commands use https://stedolan.github.io/jq/ to parse json

--json Outputs returned data as JSON for further processing.

netlify sites:list --json | jq '.[0]'
netlify deploy --json | jq '.site_id'
netlify addons:list --json

--silent silences all logs in a command

netlify deploy --silent

--auth allows for the auth flag to be passed into any command.

netlify status --auth otherAccountToken