Add category path to pinned items

[Wladefant]

Add functionality to display the location of a product as a path in the toolbar after it is pinned.

• Add getCategoryPath function in scripts/bootloader.js to retrieve category, subcategory, and page number from the URL.
• Modify initSetPageTitle function in scripts/bootloader.js to call getCategoryPath and store the result in a variable.
• Export getCategoryPath function from scripts/bootloader.js for use in other files.
• Import getCategoryPath function in scripts/grid.js.
• Modify addPinnedTile function in scripts/grid.js to include the category path in the pinned tile.
• Update view/pinned_tile.html to add a new element to display the category path in the pinned tile.
• Update manifest.json to include necessary permissions and browser-specific settings.
• Add new HTML files for notifications, popups, and widgets in the view directory.
• Remove unused CSS and JS files from the resource and scripts directories.
• Add .gitignore and package.json files for project configuration and dependencies.