feat: add protocol api

[lellimecnar]

DO NOT MERGE!!!

I was just playing around with using a gassist protocol to open up the app for an API.

DO NOT MERGE!!!

[lellimecnar]

I was able to get it working enough to set up an Alfred workflow that uses the app to trigger queries, but it doesn't show the window if it's not already visible. I'm not very familiar with Electron, but I thought I'd take a crack at it.

[Melvin-Abraham]

That seems like a great start. This could maybe also used for CLI implementation going forward.

Note: The logic for custom protocol can be moved to the main process (app.js as per current setup) instead of the renderer process (main.js as per current setup) and when the request is successfully captured by the main process, it could be relayed to the renderer process via IPC.