Explore alternatives to JSON.parse

[WULCAN]

Description

Store#loadFromDisk uses JSON.parse to reload unpublished translations from disk after restart. JSON.parse is a blocking API so this might block the main thread for a long time.

Explore if we can replace this blocking API.

Estimated size (S, M, L)

I think this issue is Small because only the research is in scope. We will spawn a new issue for any implementation.

Open questions

This could potentially never get prioritized, as it only affects one request after restart.