Update it to schwab-api

[arsaboo]

Now that td-api is being phased out, can we update this for Schwab? Here's a nice wrapper being developed for Schwab.

[lukasNo1]

Hey, i moved my account over to ibkr just this week, so i wont upgrade the bot for schwab. I think most of the endpoint will stay the same though, so the upgrade process should hopefully not take too long if you want to have a go at it.