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/r767_match_variant_fn_ptr_local/case.ww

@@ -0,0 +1,14 @@
+//ww:run-exit 10
+package main;
+fn ai(x: i32) i32 = { return x + 1; };
+fn bi(x: i64) i64 = { return x + 1; };
+fn indl(f: *fn(x: i64) i64, x: i64) i64 = { return (*f)(x); };
+export fn main() i32 = {
+	let g: *fn(x: i64) i64 = &bi;
+	let v: (*fn(x: i32) i32 | *fn(x: i64) i64) = g;
+	let r: i32 = match (v) {
+	case let p: *fn(x: i32) i32 => yield 1: i32;
+	case let q: *fn(x: i64) i64 => yield indl(q, 9): i32;
+	};
+	return r;
+};