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_str_ptrs/case.ww

@@ -0,0 +1,8 @@
+//ww:run-exit 4
+package main;
+fn main() i32 = {
+	let a: [3]str = ["hi", "by", "x"];
+	let p: *u8 = a[0].ptr;
+	let c: u8 = *p;
+	return (c: i32) - 100i32;
+};