Application Commands fix.

[false-fox]

Fixes #476, #526, #535 (partially) and #487. Undiscord attempts to delete application/bot messages initialized by the user, but receives a 403 error and hangs.

I added a filter to the messageToDelete array to exclude bots, and a coresponding menu option to toggle the feature.

Features

Provides a UI option under the filter category

Provides a console log that bot messages will be skipped

Works on an elegantly simple filter.

~line 318 of undiscord-core.js

if (this.options.IncludeApplications == false) {
    messagesToDelete = messagesToDelete.filter(msg => !msg.author.bot)
}

Notes

I figured including application messages should be "opt in" as in most use cases users won't have manage messages perms. Let me know if this should be changed and it's a simple fix.