Update to SailPoint CLI

[colin-mckibben-sp]

Description

Refactored the CLI tool to support more commands than just connectors. Notable changes include:

• Changed the CLI command from sp to sail
• Changed the config file name from ~/.sp/config.yaml to ~/.sailpoint/config.yaml
• Moved each command to its own subfolder under the cmd folder
• Moved redundant code out of the connector command folder and into files that can be reused across commands
• Updated the main README with improved installation and configuration steps for Unix and Windows
• Added READMEs to each command folder to describe how to use each command
• Changed the package names to support changing the repo name from sp-connector-cli to sailpoint-cli

How Has This Been Tested?

What testing have you done to verify this change?

I ran go test on each of the sub commands, and I did some manual testing of each command to ensure they still work.