Fix: Use new gates infrastructure (Qiskit#12459)

- Create custom enum to collect either a `NormalOperation` or a `VariableOperation` depending on what is needed.
- Add a rust native `is_instruction_supported` method to check whether a Target supports a certain instruction.
- Make conversion methods from `circuit_instruction.rs` public.
- Add comparison methods for `Param` in `operations.rs`
- Remove need for isclass method in rustwise `add_instruction`
- Other tweaks and fixes.