Minor new mods

[0MUHAMMEDIRFAN]

This pull request introduces several updates to the frontend codebase, focusing on enhancing the Sidebar component's functionality, improving development workflows, and refining the pan-and-zoom utility. The most notable changes include adding a collapsible Sidebar feature, updating the development script to support hosting, and enabling horizontal panning with the Shift key.

Sidebar Enhancements:

• frontend/src/components/AppLayout/Sidebar.vue: Added a collapsible Sidebar with a toggle button that adjusts its width and layout dynamically based on the isCollapsed state. Updated button and navigation item styles to adapt to the collapsed state. [1] [2]
• frontend/src/components/AppLayout/Sidebar.vue: Introduced a reactive isCollapsed state and a toggleCollapse function to manage the Sidebar's collapse behavior. Imported necessary components and utilities.

Development Workflow Improvement:

• frontend/package.json: Modified the dev script to include the --host flag, allowing the development server to be accessed from external devices.

Pan-and-Zoom Utility Enhancements:
Modified the setPanAndZoom function in frontend/src/utils/panAndZoom.ts to enable horizontal panning when the Shift key is pressed, improving navigation capabilities.

Implemented support for detecting Shift key presses during scroll events. When the Shift key is held, the scroll direction is now reversed to provide a more intuitive horizontal-to-vertical scroll behavior—especially for devices with limited axis support.

Previously, this was not an issue on laptops with touchpads, which support multi-directional scrolling. However, certain mouse devices only support horizontal (X-axis) scrolling. In those cases, holding the Shift key now triggers vertical (Y-axis) scrolling instead.

This update ensures consistent scrolling behavior across both laptops and external mouse devices.

[ruchamahabal]

Thanks for attempting to contributing but:

1. I will soon be adding espresso style Sidebar to frappe-ui/Studio with more functionality and standard styles.
2. You have also pushed package-lock.json in this. We have yarn.lock for versioning.
3. Will be adding more standard keyboard shortcuts in a separate PR. Won't be able to accept this.

Also, try to send separate PRs for unrelated changes. Will be easier to get them reviewed and merged. So I will have to close this PR.