CRUD commands: Support passing a JSON file and/or a YAML file

[sanderblue]

Objective

Since users likely will want to use JSON files and/or YAML files that represent resource configuration, we need to provide a way for them to do so.

Acceptance Criteria

• A mechanism is in place providing the ability to pass a JSON and/or YAML file to a command
• The mechanism can be via stdin or via a command flag, but it could potentially be beneficial to have both.
• Documentation and a general example is provided