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/r808_arrlit_alias_nested_module/case.ww

@@ -0,0 +1,7 @@
+//ww:error c "not assignable" ww "array literal has 3 elements but declared array holds 2"
+package main;
+
+type row = [2]int;
+let g: [2]row = [[1: int, 2: int, 3: int], [4: int, 5: int]];
+
+export fn main() i32 = { return 0; };