Initialize an Electron.js / Next.js / TypeScript project

[vishakh]

This repo needs to be initialized so we can develop a fresh verison of the Galleon wallet.

• Initialize a new Next.js project in this repo under the galleon-web directory, ensuring we are using Typescript
• Add a basic UI component which simply displays "Hello, world"
• Add Electron.js to the project so it runs as a desktop app
• Ensure we can build and distribute galleon-web as an app

[vishakh]

As discussed with @timrolsh, Next.js does not make sense here and we should just fall back to React+Electron.

[timrolsh]

I will still create a PR and create a galleon desktop applciation starter template with electron and react ASAP.

[vishakh]

@Aeesh may have already started with #2 so make sure you don't overlap with her, @timrolsh.