TUN-4597: Add a QUIC server skeleton

- Added a QUIC server to accept streams
- Unit test for this server also tests ALPN
- Temporary echo capability for HTTP ConnectionType

vendor/github.com/lucas-clemente/quic-go/internal/wire/interface.go

@@ -0,0 +1,19 @@
+package wire
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+)
+
+// A Frame in QUIC
+type Frame interface {
+	Write(b *bytes.Buffer, version protocol.VersionNumber) error
+	Length(version protocol.VersionNumber) protocol.ByteCount
+}
+
+// A FrameParser parses QUIC frames, one by one.
+type FrameParser interface {
+	ParseNext(*bytes.Reader, protocol.EncryptionLevel) (Frame, error)
+	SetAckDelayExponent(uint8)
+}