Transfer ExpressionEngine from another repo

[thygesteffensen]

The ExpressionEngine have been extracted from this project and used as a standalone package on other projects, still following the Power Automate Expression format.

The tandalone project have had many updates and is more usable and stable, I will upload the repo later and start the transition.

[thygesteffensen]

Microsoft have open sourced the code for PowerFx, where Power Automate expression is a subset of PowerFxs capabilities.

From a glance, PowerFx implements the same functions (add, sub etc), but using Pascal case instead of camel case.

PowerFx can do more than what is allowed in Power Automate.

• Look into replacing expression engine with PowerFx
• Look into adding an intermediary, to keep the same API as expression engine.
• Is some kind of expression analysis needed, can this be done with a seperate parser.
• How does outputs and variables get handled
• What about the license

It would be nice to switch to focus on executing flows locally, and if Microsoft should make a change and use PowerFx in flows, PAMU is ready 💪