Concept to Clarifai-cli : 'configure' capability for profiles, PATs

[bohemia420]

What

• A CLI capability as clarifai-cli, to ease:
  §. configuration: config creation/maintenance w.r.t various "profiles" associated with the same userid but different Namespaces, for instance.
  §. C|R|U|D|List APIs for various resources: e.g a command-line-utility to manage the lifecycle of entities like datasets, models, workflows, applications etc. owned/controlled by a user, subject to the profile ('default' or any other) in context.
  §. This utility can come in handy, akin to how aws configure|s3|ec2 etc. as a CLI is - better interaction, automation and integration, and more power to the users.

Why

• Whilst overall, writing a very comprehensive CLI utility has to be at first a thought-through, well brain-stormed decision, to for example, include:
  §. what all actions/flows are to be supported. e.g configure
  §. what all functionalities within each action are to be supported. e.g '--help', '--profile'
  §. how to vet and vouch for it, cross OSes/platforms, and general nuances of what/where to support
  It was nevertheless thought to be a good-to-have capability and as an Idea to contribute to the OSS further,
  I have:

• created a rudimentary action of clarifai-cli configure, and whilst unit tests along with custom test scripts are necessary and shall/can be added, it supports creation of a config.json (other formats like YAML are possible) inside: $HOME/.clarifai folder.
• supported a few functionalities vis-a-vis --help as a customized "man(ual)" per (sub-)command, and support for multiple profiles, just like AWS CLI has.

How

• Giving a blueprint biased for an action to create a prototype, as is walked through in this Draft PR, to support for atleast the "creation of" a config file that keeps our PATs and other config metadata.

Tests

• Best effort, manual tests only. This is a draft PR, and complete test cases, strategies, assurances shall be laid out.

Notes

• [please dont merge it], unless it matures - but your reviews and take to better the strategy and user experience, capabilities of this functionality are highly appreciated, albeit I believe that making it to master for this utility, even still as an experimental offering replete with caveats, shall be a long(er) journey.

Supported aspects in this Prototype:

clarifai-cli -h
clarifai-cli configure
clarifai-cli configure -h
clarifai-cli configure --profile

[bohemia420]

@sainivedh @sanjaychelliah @luv-bansal @zeiler I believe this idea around a clarifai-cli capability (trying to take it to the mights of how aws-cli operate and come in handy), can be bettered with your views, directions and contributions.