As a developer, I need to make block production work in the browser

[binier]

Right now block production fails because the provers index can't be built.

Files necessary for building provers index are loaded from the file system. This can't work in the browser. Instead we should fetch those files via http requests.

[binier]

Implemented fetching those file from web for wasm runs, but it still fails to build provers, because the computation relies on rayon api, which can't be used in main browser thread.

[binier]

Resolved the issue but now node fails due to OOM. I'll try building only the part of the provers index that we need for block production.

[binier]

I'll try building only the part of the provers index that we need for block production.

Implemented this. Now it no longer fails with OOM when building provers, but as the node is running and we are bootstrapping, it runs out of memory, because even just verification indexes + only block prover index, takes up around 1.1gb RAM.