[STIM] Missing features

[joao-boechat]

• Noisy operations with a probability parens arg (e.g. M(0.01), MX(0.01), MRZ(0.02), MXX(0.01))
• Support for generalized Pauli gates: MPP, SPP, SPP_DAG
• MPAD
• HERALDED_ERASE, HERALDED_PAULI_CHANNEL_1
• Non-contiguous correlated error chains
• Pauli products that fold to the identity, such as MPP Z0*Z0
• Sweep-bit targets (e.g. CX sweep[5] 7)
• DETECTOR, OBSERVABLE_INCLUDE

For more information, look at the STIM docs