Implement erasure coding usage

[0xCardiE]

Here we have a challenge to solve UI and how to explain and add options in flow.
Do we do it as some extra dropdown or 5 buttons to choose from before we upload?
How do we explain what this is in simple terms and that it will take more space?
Labels should be "redundancy level" numbers/names of level?

tehnically implementation is straight fwd
https://docs.ethswarm.org/docs/develop/access-the-swarm/erasure-coding/#uploading-with-erasure-coding

with post headers

 curl \
    -X POST http://localhost:1633/bzz?name=test.txt \
    -H "swarm-redundancy-level: 1" \
    -H "swarm-postage-batch-id: 54ba8e39a4f74ccfc7f903121e4d5d0fc40732b19efef5c8894d1f03bdd0f4c5" \
    -H "Content-Type: text/plain" \
    --data-binary @test.txt

[0xCardiE]

suggested layout and tooltip

[0xCardiE]

"swarm-redundancy-level"

needs to be added to NGINX config to pass through headers setting redundancy