Add webpack 5 to peerDependencies

[calinalexandru]

If you're using webpack 5 and try to install packages normally you'll get this error

npm ERR! Found: webpack@5.74.0
npm ERR! node_modules/webpack
npm ERR!   dev webpack@"^5.74.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer webpack@"^3.0.0 || ^4.0.0-alpha.0 || ^4.0.0" from worklet-loader@2.0.0
npm ERR! node_modules/worklet-loader

To fix this, you will have to install npm dependencies with --legacy-peer-deps
I've tested the worklet-loader with webpack 5 and it seems to work fine, so I've made this PR to update the peer dependencies accordingly.