Adding Deno option for BFF and image-picker

[thisisjofrank]

Adding a Deno version of the backend-for-frontend-node

Ported BFF over to Oak and Oak router, instead of express.
Added a deno.json and some tasks to the image-picker to run in a more 'deno friendly' way.

How to verify that this has the expected result

Add your api key and use the deno tasks to run the services.

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[ry]

would be nice to show that you don’t need to import any otel libraries to see something