Guide fuzzing by adding standard tor GET and POST testcases

src/test/fuzz/dict/http

@@ -0,0 +1,24 @@
+#
+# AFL dictionary for the Tor Directory protocol's HTTP headers
+# ------------------------------------------------------------
+#
+# Extracted from directory_handle_command() in the tor source code
+#
+# Copyright (c) 2016, The Tor Project, Inc.
+# See LICENSE for licensing information
+#
+# Usage:
+# Select the dictionaries relevant to the part of the directory protocol you
+# are fuzzing, and feed them to your fuzzer (if it supports dictionaries).
+
+http_header_body_delimiter = "\x0d\x0a\x0d\x0a"
+http_header_header_delimiter = "\x0d\x0a"
+# multi-character tokens only
+#http_header_value_delimiter = " "
+
+content_length_header = "Content-Length:"
+forwarded_for_header = "Forwarded-For:"
+x_forwarded_for_header = "X-Forwarded-For:"
+
+get_command = "GET"
+post_command = "POST"