Add fuzz scripts

fuzz/.gitignore

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+
+target
+libfuzzer

fuzz/Cargo.toml

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+
+[package]
+name = "url-fuzz"
+version = "0.0.1"
+authors = ["Automatically generated"]
+
+[dependencies.url]
+path = ".."
+
+[[bin]]
+name = "parse"
+path = "fuzzers/parse.rs"
+
+[workspace]
+members = ["."]

fuzz/fuzzers/parse.rs

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+#![no_main]
+
+extern crate fuzzer_sys;
+
+extern crate url;
+use std::slice;
+use std::str;
+
+#[export_name="LLVMFuzzerTestOneInput"]
+pub extern fn go(data: *const u8, size: isize) -> i32 {
+	let slice = unsafe { slice::from_raw_parts(data, size as usize) };
+	if let Ok(utf8) = str::from_utf8(slice) {
+		let url = url::Url::parse(utf8);
+	}
+	return 0;
+}