[plotterparameter] add plotterparameter type

Adds schema file, beat.core integration, test files & tests

Closes #66
2 jobs for 66-plotterparameter-schema in 17 minutes and 59 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #162957
docker-build
build_linux_36

00:14:18

65.0%
passed #162958
macosx
build_macosx_36

00:17:55

65.0%