Add orchcli clean command for environment cleanup and reset

[mohit-nagaraj]

Description

Implement a comprehensive clean command to help developers reset their KubeOrchestra environment. This command
should handle Docker resources, cloned repositories, and various caches with appropriate safety measures.

Motivation

Developers often need to:

• Start fresh after configuration issues
• Clean up disk space from Docker resources
• Remove test data and reset databases
• Switch between different project setups
• Troubleshoot by starting from a clean state

Implementation Tasks

Core Functionality:

• Create cmd/clean.go with clean command
• Register command in cmd/root.go
• Implement confirmation prompts (unless --force used)
• Show what will be deleted before confirmation
• Display space that will be reclaimed

Docker Cleanup:

• Stop and remove KubeOrchestra containers
• Remove KubeOrchestra Docker volumes (MongoDB data)
• Remove KubeOrchestra Docker networks
• Clean up dangling images related to KubeOrchestra
• Option to prune all unused Docker resources

Repository Cleanup:

• Remove cloned UI repository (with --repos flag)
• Remove cloned Core repository (with --repos flag)
• Check for uncommitted changes before deletion
• Backup option for uncommitted work

Cache and Build Cleanup:

• Clear Go build cache (with --cache flag)
• Clear npm/node_modules in UI repo (with --cache flag)
• Clear Docker build cache (with --cache flag)
• Remove .air.toml temporary files

Configuration Cleanup:

• Remove OrchCLI config files (~/.orchcli/*)
• Reset project configuration
• Option to keep configuration (--keep-config)

[mohit-nagaraj]

Closing as duplicate of #37