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/r71_arrlit_bool/case.ww

@@ -0,0 +1,10 @@
+//ww:run-exit 5
+package main;
+fn main() i32 = {
+	let b: [3]bool = [true, false, true];
+	let s: i32 = 0i32;
+	if (b[0]) { s += 4i32; };
+	if (b[1]) { s += 2i32; };
+	if (b[2]) { s += 1i32; };
+	return s;
+};