[FEATURE] Update nuxt module to support multiple sales channel config

[patzick]

Description

Update nuxt module to support multi sales channel

Use Case

We should make nuxt module more flexible to allow more config options from the nuxt config, making the plugin more flexible as well. Hooks can also be considered!

Proposed Solution

Example solution with multi channel: https://github.com/shopware/frontends/pull/1227/files?short_path=d7c5cfc#diff-4d241438c24c98d2f06660c0d066b697b5e819d5a438d9fed17c2992e6b04a2e

Alternatives Considered

No response

Additional Context

No response