Qiskit / qiskit / 10691365168

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Commit Message

Implement a capacity-allocated constructor for `DAGCircuit` in Rust. (#12975)

* Initial: implement fixed capacity constructor for DAGCircuit
- Implement `DAGCircuit` with `with_capacity` to create an initially allocated instance, for rust only.
- Implement `with_capacity` for `BitData` and `IndexInterner` that creates an initally allocated instance of each type.
- Other small tweaks and fixes.
- Add num_edges optional argument. If known, use `num_edges` argument to create a `DAGCircuit` with the exact number of edges.
- Leverage usage of new method in `copy_empty_like`.
- Use `..Default::default()` for `op_names` and `calibrations` fields in `DAGCircuit::with_capacity()`

* Fix: Adapt to #13033

* Fix: Re-arrange the function arguments as per @mtreinish's review.
- The order now follows: qubits, clbits, vars, num_ops, edges. As per [Matthew's comment](https://github.com/Qiskit/qiskit/pull/12975#discussion_r1742426093).

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