feat: minimal PWA manifest

[lidel]

This PR is the first stab at making it possible to install and run in app mode.

TODO

• manifest and icon
• land other things from the IPFS Camp milestone
• rebase and tweak any papercuts
• add protocol handlers and ?uri= router (details in PWA with handlers for ipfs:// and ipns:// #21)

Aims to work towards #21

[lidel]

💭 ideas for better name welcome. We need something short, perhaps just go with inbrowser.link ?

[SgtPooki]

i think thats about as short as we can go and have it still be semantic

[SgtPooki]

Code looks fine to me but i havent looked at a pwa manifest in a long time. Ill need to deploy local and see if i can get it to work

[lidel]

@SgtPooki it is super tricky to test on mobile in LAN due to lack of https, but I was able to do it in desktop Google Chrome with goo.localhost:3000, it shows small icon on the right side of address bar that allows installing the PWA.

Something that is missing is protocol_handlers, but we need and ?uri=%s router (specs) for that.

I am thinking I could add router by converting ?uri=%s into /ipxs/id/.. path before passing it to verifiedFetch here, but lmk if there is a better way?
It could also be implemented as redirect response upstream in verified fetch, but not sure how useful it is beyond this project.

[SgtPooki]

@SgtPooki it is super tricky to test on mobile in LAN due to lack of https, but I was able to do it in desktop Google Chrome with goo.localhost:3000, it shows small icon on the right side of address bar that allows installing the PWA.

Mac allows you to do simulation of iphone from desktop, i will give this a quick try before i move over to something else

[SgtPooki]

@SgtPooki it is super tricky to test on mobile in LAN due to lack of https, but I was able to do it in desktop Google Chrome with goo.localhost:3000, it shows small icon on the right side of address bar that allows installing the PWA.

Mac allows you to do simulation of iphone from desktop, i will give this a quick try before i move over to something else

[SgtPooki]

there are some UX issues and issues with content for specs.ipfs.tech. The simulator history back and forward work, but it's hard to trigger.. in general it seems to work okay!

[lidel]

Thanks! Let's ship this, and add protocol handlers at a later time.