Wrap UI as a standalone Desktop application using Electron

[nikhilsaraf]

We want to be able to download an run Kelp and CCXT as a standalone application. Wrapping it in electron (or something similar) can help.

Desired Behavior

A production-ready version of the Kelp GUI should be double-clickable by the user and should open up as if it is a standalone application, with all it's dependencies included (or downloading in the background).

Impact

The desired behavior will allow me to package the Kelp GUI as a nice user-friendly desktop application.

Feature Suggestion

We can achieve the desired behavior by using something like Electron or some other desktop environment.

References

This feature exists in all desktop applications. Need to find some examples of desktop applications written in Golang.

Specification

Some frameworks to consider:

• https://github.com/zserge/webview (not well maintained, and does not work out of the box, linker errors)
• https://github.com/Equanox/gotron (a variant of Electron for golang)
• https://github.com/asticode/go-astilectron (a better developed variant for golang)

Chose go-astilectron

Considerations:

• where astilectron downloads it's "vendor" directory, see BaseDirectoryPath
• consider ulimit settings for number of open files
• close server and app along with shutting down all bots when desktop window is closed (for now)
• new window opens should be handled correctly (show market and show offers)