Use something (anything but bash) for bash json parsing

We have places in Arcade where we have to parse Json before an sdk is acquired. Powershell makes this easy on Windows. On Bash, the parsing is fragile and error prone. We should consider adopting a dependency on a more robust parsing tool in Arcade.

Something like [jq](https://stedolan.github.io/jq/)

From https://github.com/chcosta/arcade/commit/737e29378f2a8596f6ceec1f378beea2a7b0ba0b#r33161980