feat: add Assets-import-attributes module for node/ssr env

[ilhan007]

Change

The change provides new entry point for assets (cldr, i18n and theming), called Assets-import-attributes.js.
This module is an alternative to Assets.js- the assets are only registered and loaded on the fly with dymamic imports when needed with added support for the with: { type: 'json' } import attribute, which is required in certain environments, such as Node.js with server-side rendering (SSR) - to properly load JSON files.

Example:

await import("../assets/i18n/messagebundle_bg.json", { with: { type: 'json' } });

Recommended usage: in environments that require SSR compatibility (e.g., Node.js).

Known issues

• Webpack < 5.84: older versions of Webpack do not support the with: { type: 'json' } syntax and will fail to build.
• Vite (dev mode): When using Vite, the development server may raise errors (e.g., expecting application/json) unless additional configuration is added to handle JSON imports with attributes.

[nnaydenow]

I think that we have to add file to fiori package as well.