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_loop/case.ww

@@ -0,0 +1,15 @@
+//ww:run
+// Runtime half of 930_free_noop_run.c free_loop_no_stack_damage.
+package main;
+let g: i32 = 0;
+fn bump(p: *i32) *i32 = { g = g + 1; return p; };
+export fn main() i32 = {
+	let x: i32 = 1;
+	let i: i32 = 0;
+	for (i < 1000000) {
+		free(bump(&x));
+		i += 1;
+	};
+	if (g != 1000000) { return 5; };
+	return 0;
+};