✨ Add support for `array` in the OpenQASM frontend

🤖 AI text below 🤖

The OpenQASM frontend treats array as an unsupported reserved keyword, so it is rejected everywhere, including as an identifier:

array[int, 4] values;   // error: reserved keyword 'array' is not supported
int array = 0;          // error: reserved keyword 'array' is not supported

Arrays are needed whenever a program takes a table of classical values. A uniformly controlled rotation, for example, needs one angle per control state, which OpenQASM 3 expresses as array[angle, N]. A fixed-width angle[N] is a single angle held to N bits of precision, so it cannot stand in for one.

Ideally, an array is translated to a tensor. The conversion to jeff could handle this out of the box.