Adds a static framework for iOS, of unknown functionality.

I have committed some grave sins in the name of expedience. I am focusing primarily on making this build correctly, and will ensure its functionality later.
Do not show the static framework’s env vars in the build log.
Merge branch 'develop' into feature/ios-static-framework
Defines l3_tear_down for release builds.
Changes the static framework target to be a static library.

It also copies its headers and library into a framework structure.
Merge branch 'feature/ios-static-framework' into develop