feat: Translation plugin

[shariquerik]

import { translationPlugin } from 'frappe-ui'
app.use(translationPlugin)

Examples

__('Hello')
__('{0} of {1}', [3, 100])

fixes: #233 dependent on: https://github.com/frappe/frappe/pull/28638

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[netchampfaris]

This PR is incomplete without an accompanying python package, because it depends on translated strings to be set on window.