Now that Olm needs to be inited asynchronously anyway, we can just pass the options to Olm.init(), and as long as we do that before we start the js-sdk, we're all good. This will means the olm js is now part of the main bundle but since it's now just a wrapper around the wasm, this is probably faster. Also add the directwatch flag to olm.wasm because otherwise it doesn't seem to copy the file in watch mode...