fix: gyan/cli-documentation (#359)

## Summary by Sourcery

Add comprehensive CLI documentation for SettleMint platform, including
detailed command references and usage guides for platform management

New Features:
- Created platform-components.mdx with an overview of SettleMint CLI
usage and installation methods
- Added command-reference.mdx with comprehensive documentation for all
CLI commands and their options

Documentation:
- Added detailed CLI documentation for SettleMint platform, covering
command references for workspace, application, blockchain network,
private key, middleware, storage, and integration tool management

Author: gyan-sharma