feat: add CLI Viewer Page with multi-pane layout and state management

- Implemented the CliViewerPage component for displaying CLI outputs in a configurable multi-pane layout.
- Integrated Zustand for state management, allowing for dynamic layout changes and tab management.
- Added layout options: single, split horizontal, split vertical, and 2x2 grid.
- Created viewerStore for managing layout, panes, and tabs, including actions for adding/removing panes and tabs.
- Added CoordinatorPage barrel export for easier imports.

ccw/docs-site/.docusaurus/globalData.json

@@ -127,7 +127,7 @@
             },
             {
               "id": "overview",
-              "path": "/docs/docs/",
+              "path": "/docs/docs/overview",
               "sidebar": "docs"
             },
             {
@@ -169,7 +169,7 @@
           "sidebars": {
             "docs": {
               "link": {
-                "path": "/docs/docs/",
+                "path": "/docs/docs/overview",
                 "label": "Quick Start"
               }
             }