Update WSCC_9bus_mult examples and implement splitting examples in DP… #2512

Job	Run time
Scan Sourcecode with Cppcheck	3m 23s
Build dpsimpy and tests examples on Fedora Linux	7m 10s
Build Cxx examples on Fedora Linux	10m 52s
Run pytest over all notebooks	13m 6s
Execute WSCC 9 bus example	1m 5s
Run dpsim-mqtt-import-export VILLASnode example / Run a VILLASnode example across multiple containers	1m 22s
Run dpsim-mqtt VILLASnode example / Run a VILLASnode example across multiple containers	1m 35s
Run dpsim-mqtt-import-export-MIMO VILLASnode example / Run a VILLASnode example across multiple containers	1m 12s
Run dpsim-file VILLASnode example / Run a VILLASnode example across multiple containers	1m 22s
Run mqtt-cigre-mv-pf-profiles VILLASnode example / Run a VILLASnode example across multiple containers	1m 36s
Compare Notebook results	30s
	43m 13s

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