Manually Configure webpack and electron-builder instead of using electron-webpack

[benrbray]

Resolves #4 . Noteworthy doesn't rely on any sophisticated features of electron-webpack, so it was straightforward (though laborious) to sift through the config files generated by electron-webpack and manually copy the bare-minimum important bits. More sophisticated functionality provided by electron-webpack such as hot-module-reloading is not included. The goal was to get up and running again as quickly as possible, so that I can upgrade to new major versions of Electron and TypeScript and resume working on features. If lack of HMR proves to be a frustration, I may add it back in later.

I was also able to delete some hacky config code required to glue on support for SolidJS to the electron-webpack config. The result is a much simpler configuration file that I can actually understand and change later! Working on this also gave me an opportunity to learn more about webpack and electron-builder, which I had more or less treated as black boxes until now.