Dictionary support for fuzzers

build.yaml

templates/tools/fuzzer/runners.template

test/core/end2end/fuzzers/hpack.dictionary

tools/codegen/core/gen_static_metadata.py

tools/fuzzer/runners/client_fuzzer.sh

tools/fuzzer/runners/hpack_parser_fuzzer_test.sh

tools/fuzzer/runners/http_fuzzer_test.sh

tools/fuzzer/runners/json_fuzzer_test.sh

tools/fuzzer/runners/nanopb_fuzzer_response_test.sh

tools/fuzzer/runners/nanopb_fuzzer_serverlist_test.sh

tools/fuzzer/runners/server_fuzzer.sh

tools/fuzzer/runners/uri_fuzzer_test.sh