[Prototype] Add TemplateOp to quantum dialect

[mudit2812]

TODOs:

• Add to qref dialect
• Add to xDSL dialect

The new op looks like this:

%qreg1 = quantum.template "Foo"(%mat : tensor<?x?xcomplex<f64>>)
    in_qreg (%qreg0) qubit_inds (%wire_reg0 : tensor<?xi64>)
    adjoint ctrls (%ctrl_reg : tensor<3xi64>) ctrl_vals (%ctrl_vals : tensor<3xi1>)
    -> !quantum.reg
    param_map = {mat = [0]}
    in_qubits_map = {reg = [0]}
    static_data = {check = true}

[sc-117467]

[paul0403]

😮

Let's talk about doing this in reference semantics! Since the entire plxpr frontend is being migrated there, this could be super natural over there.

[mudit2812]

@paul0403 this is just me brainstorming as part of the future abstractions ADR

[paul0403]

@paul0403 this is just me brainstorming as part of the future abstractions ADR

Ah ok!

[mudit2812]

@paul0403 but yes, I will definitely need your support once we do need to add the same op to the qref dialect