chore: refactor composables

[m0ksem]

This PR is intended to make it easier to use composables, making them using the same format and code style.

Right now, most of the composables made spontaneously. When composable is moved to std it means it is in good state.

I split composables into:

• internal - used to work with vue or vuestic services.
• ssr - used to optimize framework when working with ssr. Ideally, make eslint rule to prevent using window, document in favor of useWindow, useDocument.
• browser - used to work with browser api and DOM elements.

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