feat!: Make array repeat and scan ops generic over extension reqs (#1716)

Closes #1714

BREAKING CHANGE: Array `scan` and `repeat` ops get an additional type
parameter specifying the extension requirements of their input
functions. Furthermore, `repeat` is no longer part of `ArrayOpDef` but
is instead specified via a new `ArrayScan` struct.

Author: mark-koch

hugr-core/src/extension/prelude.rs

@@ -122,6 +122,7 @@ lazy_static! {
             NoopDef.add_to_extension(prelude, extension_ref).unwrap();
             LiftDef.add_to_extension(prelude, extension_ref).unwrap();
             array::ArrayOpDef::load_all_ops(prelude, extension_ref).unwrap();
+            array::ArrayRepeatDef.add_to_extension(prelude, extension_ref).unwrap();
             array::ArrayScanDef.add_to_extension(prelude, extension_ref).unwrap();
         })
     };