[build] Add all fuzzer targets to v8_fuzzers group.

Change-Id: I7f519cc778157f3ddd4c3135d0620a9f46d1193c
Reviewed-on: https://chromium-review.googlesource.com/475873Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44611}

BUILD.gn

@@ -2669,6 +2669,7 @@ group("v8_fuzzers") {
     ":v8_simple_wasm_asmjs_fuzzer",
     ":v8_simple_wasm_call_fuzzer",
     ":v8_simple_wasm_code_fuzzer",
+    ":v8_simple_wasm_compile_fuzzer",
     ":v8_simple_wasm_data_section_fuzzer",
     ":v8_simple_wasm_function_sigs_section_fuzzer",
     ":v8_simple_wasm_fuzzer",