Add tests for `switchDemoPe` #6976

Job	Run time
license-check	17s
bittide-instances hardware-in-the-loop test matrix generation	24s
Build dependencies	2m 22s
bittide-instances synthesis matrix generation	23s
Basic linting	36s
bittide-experiments unittests	1m 29s
bittide-instances doctests	45s
bittide-instances unittests	1m 5s
synth (safeDffSynchronizer, hdl)	1m 39s
synth (swCcOneTopologyTest, test)	13m 28s
Bittide tests	6m 58s
synth (linkConfigurationTest, test)	13m 27s
Firmware Limit Checks	1m 8s
Firmware Support Unit Tests	2m 9s
synth (transceiversUpTest, test)	12m 59s
Rust Lints	35s
synth (vexRiscvTcpTest, test)	7m 40s
synth (vexRiscvTest, test)	7m 27s
HITL	1s
Generate clock control report	1s
All jobs finished	1s
	1h 14m 54s

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