Allow access to api

[roydukkey]

As a user of the component, I would like to be able to download the data as a CSV.

Would it be as simple as changing the following from:

https://github.com/Budibase/svelte-ag-grid/blob/9d19c4c991ed9034510cc3754a551029a8c3d691/src/Component.svelte#L25

to:

export let api;

Or, is there a better solution?