[Feature Request]: Rule Query Language specs/documentation

[luispfgarces]

Is your request related to a problem you have?

Create documented specs for a new language to interact with the rules engine - Rule Query Language, or simply RQL. The documented specs will serve as a guide for the implementation.

Describe the solution you'd like

Documentation created on the wiki with the language specs.

Are you able to help bring it to life and contribute with a Pull Request?

Yes

Additional context

No response