Fuzzing: Add 3 fuzzers

Signed-off-by: AdamKorcz <adam@adalogics.com>

registry/api/v2/fuzz.go

@@ -0,0 +1,12 @@
+// +build gofuzz
+
+package v2
+
+// FuzzParseForwardedHeader implements a fuzzer
+// that targets parseForwardedHeader
+// Export before building
+// nolint:deadcode
+func fuzzParseForwardedHeader(data []byte) int {
+	_, _, _ = parseForwardedHeader(string(data))
+	return 1
+}