OSS-Fuzz: Add new fuzzer/corpus/dict targets zlib

Signed-off-by: Arthur Chan <arthur.chan@adalogics.com>

Author: arthurscchan

Modules/_xxtestfuzz/dictionaries/fuzz_zlib.dict

@@ -0,0 +1,23 @@
+# zlib/lzma/gzip headers and structure tokens
+"\x78\x01"
+"\x78\x5e"
+"\x78\x9c"
+"\x78\xda"
+"\x78\xf9"
+"\xfd7zXZ"
+"\xfd7zXZ\x00"
+"\x1f\x8b"
+"\x1f\x8b\x08"
+"\x5d\x00"
+"\x5d\x00\x00"
+"\x80"
+"\x00\x00\xff\xff"
+"\x00\x00"
+"\xff\xff"
+"\x04\x00"
+"\x9c"
+"\xda"
+"\x00"
+"\xff"
+"\x02"
+"\x01"

Modules/_xxtestfuzz/fuzz_tests.txt

@@ -9,3 +9,4 @@ fuzz_struct_unpack
 fuzz_ast_literal_eval
 fuzz_elementtree_parsewhole
 fuzz_pycompile
+fuzz_zlib