Replace qcompile with SerialCompiler in tests and documentation
`qcompile` is deprecated and all references to `qcompile` in the tests and documentation should be replaced by something based on `SerialCompiler`. Similar to what is done in !516. Code snippet to help out future developers assigned to this task: ``` python quantum_device = QuantumDevice() quantum_device.hardware_config(hardware_cfg) # setup qubits and stuff ... compiler = SerialCompiler(name="compiler") compiled_sched = compiler.compile( schedule=schedule, config=quantum_device.generate_compilation_config() ) ```
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