For some unknown to me reason we are using a different Yarn call to
Shadow-cljs to generate the JSBundle for iOS builds, while the one
created by the Android derivation shoudl be exactly the same.
I'm changing the target to just be `make jsbundle` while keeping aliases
referencing old naming, and moving things around in `nix` folder to
reflect the fact that the derivation is no longer Android-specific.
Also, crucially, I've changed the `import` in `index.js` to use the
`./result/index.js` path, since that's what Nix creates. I'm not sure if
this clashes with any developer workflow that takes place locally, so
I'd appreciate some testing from developers.
Depends on: https://github.com/status-im/status-jenkins-lib/pull/67
Signed-off-by: Jakub Sokołowski <jakub@status.im>