Rebase realtime_decoding_demo onto the refactored surface_code-1 app #2442

Job	Run time
Check changes	7s
All libs / Build and test (arm64, 13.0)	3m 22s
All libs / Build and test (arm64, 12.6)	3m 16s
All libs / Build and test (amd64, 13.0)	3m 20s
QEC / Build and test (amd64, 12.6)	3m 7s
QEC / Build and test (arm64, 13.0)	3m 21s
All libs / Build and test (amd64, 12.6)	3m 15s
Docs / Build	3m 17s
QEC / Build and test (arm64, 12.6)	3m 16s
QEC / Build and test (amd64, 13.0)	3m 10s
Build CUDAQ	0s
Wheels	0s
Solvers	-2s
Verify PR	2s
QEC / GPU tests	1s
QEC / Multi-GPU tests (${{ matrix.runner.arch }}, CUDA ${{ matrix.cuda_version }})	1s
	29m 33s

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