moved docs from FMIImport&Core into FMI.jl #194

Job	Run time
sync-files (windows-latest, manipulation, 1.8, x64, false)	11m 51s
sync-files (windows-latest, modelica_conference_2021, 1.8, x64, false)	11m 2s
sync-files (windows-latest, multiple_instances, 1.8, x64, false)	11m 37s
sync-files (windows-latest, multiprocessing, 1.8, x64, false)	15m 47s
sync-files (windows-latest, multithreading, 1.8, x64, false)	13m 8s
sync-files (windows-latest, parameterize, 1.8, x64, false)	11m 55s
sync-files (windows-latest, simulate, 1.8, x64, false)	11m 22s
sync-files (windows-latest, parameter_optimization, 1.8, x64, false)	10m 54s
auto-commit	0s
call-docu	0s
	1h 37m 36s

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