feat: Add gate modifiers and additional supported gates to AutoQASM (#…

…958)

* Implement control, control_state, power gate modifiers

* Enable gate modifiers on custom gates

* Add prx gate

* Add physical qubit test case

* Update type checks

* Use BasisStateInput for control_state

* Simplify control_state logic

* Add docstrings and improve test parameterizations

src/braket/experimental/autoqasm/api.py

@@ -538,7 +538,7 @@ def _convert_gate(
         )
     qubit_args = [args[i] for i in gate_args.qubit_indices]
     angle_args = [args[i] for i in gate_args.angle_indices]
-    aq_instructions.instructions._qubit_instruction(gate_name, qubit_args, *angle_args)
+    aq_instructions.instructions._qubit_instruction(gate_name, qubit_args, *angle_args, **kwargs)
 
 
 def _wrap_for_oqpy_gate(
@@ -574,6 +574,9 @@ def _get_gate_args(f: Callable) -> aq_program.GateArgs:
     gate_args = aq_program.GateArgs()
     sig = inspect.signature(f)
     for param in sig.parameters.values():
+        if param.kind == param.VAR_KEYWORD:
+            continue
+
         if param.annotation is param.empty:
             raise errors.MissingParameterTypeError(
                 f'Parameter "{param.name}" for gate "{f.__name__}" '