test/wcc/data: grow the declarative compiler corpus to 1,224 fixtures

The r-prefixed waves absorb the runtime, reject, and byte-compare rows
of the migrated native carriers; each fixture is one directory with one
case.ww and a //ww:error, //ww:compile, //ww:run, or //ww:run-exit
directive covering both frontends.

test/wcc/data/r949_intbinop_enum_flag_or/case.ww

@@ -0,0 +1,7 @@
+//ww:run
+package main;
+type flag = enum uint { A = 1, B = 2, C = 4 };
+export fn main() i32 = {
+	let f: flag = flag.A | flag.B | flag.C;
+	return (f: i32) - 7;
+};