Measure library creation overwriting the library resource file. Measure output incomplete.

[richfirely]

Describe the bug
When compiling libraries with the packager, if the library is also a measure, it will overwrite the FHIR library resource file. Measures should be written to a different filename or folder. ResourcePackager.cs CreateMeasureResource.

We should also produce the full and correct measure FHIR resource.

To Reproduce
Steps to reproduce the behavior:
Compile elm that is both a library and a measure. Notice only the measure is created.

Version used:
2.0 branches.

⚠️ Must be discussed at September WGM as this is not per spec.