feat: add Stalker results page with filtering and pagination

- Introduced StalkerResultItem and StalkerResultsResponse types for handling API responses.
- Implemented StalkerExplorer component for displaying Stalker results with search and filter options.
- Added sorting functionality for Stalker results table.
- Enhanced Dashboard to include a button for navigating to Stalker results.
- Updated routing to support Stalker results page.
- Improved styles for section headers and inventory columns in the results table.

package.json

@@ -7,6 +7,7 @@
     "bestsellers": "bun run src/bestsellers-by-category.ts",
     "monthly-sold": "bun run src/top-monthly-sold-by-category.ts",
     "mid-range": "bun run src/mid-range-sellers-by-category.ts",
+    "stalker": "bun run src/stalker.ts",
     "upc": "bun run src/upc-lookup.ts",
     "upc-file": "bun run src/upc-file-analysis.ts",
     "start": "bun run src/index.ts",