Upgrade to Svelte v4

[celldra]

Can this package be upgraded to support Svelte v4?

Currently it causes this string of errors from NPM:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: project@0.0.1
npm ERR! Found: svelte@4.1.2
npm ERR! node_modules/svelte
npm ERR!   dev svelte@"^4.1.2" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer svelte@"^3.48.0" from svelte-local-storage-store@0.4.0
npm ERR! node_modules/svelte-local-storage-store
npm ERR!   svelte-local-storage-store@"^0.4.0" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! 
npm ERR! For a full report see:
npm ERR! /home/user/.npm/_logs/2023-08-08T11_14_36_997Z-eresolve-report.txt

npm ERR! A complete log of this run can be found in: /home/user/.npm/_logs/2023-08-08T11_14_36_997Z-debug-0.log

Thanks!

[celldra]

I opened a pull request for this issue, #183 I'll close this now