implement a h2quic client that can send H2 requests

protocol/encryption_level.go

@@ -0,0 +1,14 @@
+package protocol
+
+// EncryptionLevel is the encryption level
+// Default value is Unencrypted
+type EncryptionLevel int
+
+const (
+	// Unencrypted is not encrypted
+	Unencrypted EncryptionLevel = iota
+	// EncryptionSecure is encrypted, but not forward secure
+	EncryptionSecure
+	// EncryptionForwardSecure is forward secure
+	EncryptionForwardSecure
+)