TUN-7227: Migrate to devincarr/quic-go

The lucas-clemente/quic-go package moved namespaces and our branch
went stale, this new fork provides support for the new quic-go repo
and applies the max datagram frame size change.

Until the max datagram frame size support gets upstreamed into quic-go,
this can be used to unblock go 1.20 support as the old
lucas-clemente/quic-go will not get go 1.20 support.

vendor/github.com/quic-go/quic-go/internal/ackhandler/frame.go

@@ -0,0 +1,29 @@
+package ackhandler
+
+import (
+	"sync"
+
+	"github.com/quic-go/quic-go/internal/wire"
+)
+
+type Frame struct {
+	wire.Frame // nil if the frame has already been acknowledged in another packet
+	OnLost     func(wire.Frame)
+	OnAcked    func(wire.Frame)
+}
+
+var framePool = sync.Pool{New: func() any { return &Frame{} }}
+
+func GetFrame() *Frame {
+	f := framePool.Get().(*Frame)
+	f.OnLost = nil
+	f.OnAcked = nil
+	return f
+}
+
+func putFrame(f *Frame) {
+	f.Frame = nil
+	f.OnLost = nil
+	f.OnAcked = nil
+	framePool.Put(f)
+}