feat: helia-http-gateway as a service worker (phase 2)

[SgtPooki]

This issue is intended to pull out work mentioned in ipfs/helia#275 and required for IPFS dApps working group into it's own epic:

Tasks

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1. Create helia-http-gateway-sw: a service worker version of all the helia-http-gateway logic
2. Create helia-service-worker browser gateway that can work with probelab's tiros

Some important links to previous discussions:

• Create infrastructure for testing and validating retrieval reliability with Helia helia#275 (comment)

[whizzzkid]

@SgtPooki a spike here would be understanding the subdomain limitations for a service worker context, otherwise origin-isolation would fail and path based gateways has it's own limitations.

[SgtPooki]

update here: the service worker version of a Helia gateway is at https://github.com/ipfs-shipyard/service-worker-gateway