feat: Add Auggie CLI (Augment Code) Integration (#520)

* feat: add Augment Code IDE support with multi-location installation options

- Add Augment Code to supported IDE list in installer CLI and interactive prompts
- Configure multi-location setup for Augment Code commands:
  - User Commands: ~/.augment/commands/bmad/ (global, user-wide)
  - Workspace Commands: ./.augment/commands/bmad/ (project-specific, team-shared)
- Update IDE configuration with proper location handling and tilde expansion
- Add interactive prompt for users to select installation locations
- Update documentation in bmad-kb.md to include Augment Code in supported IDEs
- Implement setupAugmentCode method with location selection and file installation

This enables BMAD Method integration with Augment Code's custom command system,
allowing users to access BMad agents via /agent-name slash commands in both
global and project-specific contexts.

* Added options to choose the rule locations

* Update instruction to match with namespace for commands

* Update instruction to match with namespace for commands

* Renamed Augment Code to Auggie CLI (Augment Code)

---------

Co-authored-by: Hau Vo <hauvo@Haus-Mac-mini.local>
Co-authored-by: Brian <bmadcode@gmail.com>

bmad-core/data/bmad-kb.md

@@ -102,6 +102,7 @@ npx bmad-method install
   - **Cline**: VS Code extension with AI features
   - **Roo Code**: Web-based IDE with agent support
   - **GitHub Copilot**: VS Code extension with AI peer programming assistant
+  - **Auggie CLI (Augment Code)**: AI-powered development environment
 
 **Note for VS Code Users**: BMAD-METHOD™ assumes when you mention "VS Code" that you're using it with an AI-powered extension like GitHub Copilot, Cline, or Roo. Standard VS Code without AI capabilities cannot run BMad agents. The installer includes built-in support for Cline and Roo.