Ability to await writes in useIndexedDb

[AbdallahAlhaddad]

Clear and concise description of the problem

In some usecases, it will be useful to have the ability to await for writes .

Suggested solution

Changing the writing mechanism to a function and change data property to be readonly.

<script setup lang="ts">
const { set, data: readonlyData, isFinished: isLoaded } = useIDBKeyval('store-name', null)

const newData = { hello: "world"}
await set(newData) //  👈 ability to wait for sets
</script>

To not produce breaking changes, we could leave data as a ref and not change it to be read only.

Alternative

No response

Additional context

No response

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