feat: add immediate option to data fetching composables

[DamianGlowala]

🔗 Linked issue

Resolves nuxt/nuxt#14333

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

I have created this PR to provide a starting point for adding an immediate option to data fetching composables. Checking the logic and adding test cases (if desirable) would be very much appreciated! 🚀

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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[pi0]

Thanks for PR. I think we have already another #5500 with same goal. Please check my comment in there #5500 (comment). Probably introducing such composable makes sense to be with new name since usage is for user action.

[DamianGlowala]

Ah, didn't notice there's already one :) I'll have a look and do my best to leave some meaningful remarks about the points you raised.