Add 'HERALDED_ERASE' and 'HERALDED_PAULI_CHANNEL_1' Instruction

Implement the following two instructions: [HERALDED_ERASE](https://github.com/quantumlib/Stim/wiki/Stim-v1.13-Gate-Reference#the-heralded_erase-instruction) and [HERALDED_PAULI_CHANNEL_1](https://github.com/quantumlib/Stim/wiki/Stim-v1.13-Gate-Reference#the-heralded_pauli_channel_1-instruction)