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/r930_free_alloc/case.ww

@@ -0,0 +1,10 @@
+//ww:run
+// Runtime half of 930_free_noop_run.c free_alloc_roundtrip.
+package main;
+import rt;
+export fn main() i32 = {
+	let p: *i64 = alloc(11i64)!;
+	free(p);
+	if (*p != 11i64) { return 4; };
+	return 0;
+};