ziparchive: add a corpus for the fuzzer.

Reuse the existing test data.

Test: ran fuzzer on host, saw a lot more log spam
Change-Id: If57e4b8708832d7296b118e6926d41951d4a3ca9

libziparchive/Android.bp

@@ -196,4 +196,5 @@ cc_fuzz {
     srcs: ["libziparchive_fuzzer.cpp"],
     static_libs: ["libziparchive", "libbase", "libz", "liblog"],
     host_supported: true,
+    corpus: ["testdata/*"],
 }