Improve Cross-OS Development

[eikaramba]

i am on windows and the environment variables setting syntax does not work like this in the package.json - there are ways around this. my favorite is pnpm and a option to automatically convert them. however i wanted to have this plain and easy and thus used the webpack parameter, which works across all OSes.

I also removed the webpack config path, because it is by default the one that was set, feel free to adapt it, if there was a reason for this.

I also need to include the following packages locally for my machine, not sure if they should be included, so i omited it from this PR:

"babel-loader": "^9.1.3",
"webpack": "^5.92.1",
"webpack-cli": "^5.1.4"