TUN-10563: introduce QUICConnection interface

The bump of the QUIC library introduces a cyclic dependency between the connection and quic modules hence it is necessary to break this coupling.

Right now, the connection module depends on the quic module for the datagram v2/v3 and to which a QUIC connection (currently an interface) is passed.

As it is there is no issue however, under the hood, interface is a wrapper around an UDP connection and a QUIC connection meaning this type must be exposed to the quic module since the QUIC Connection will no longer be a interface but a struct.

Given the above, these changes introduce an interface, QUICConnection, with the surface used today in cloudflared and a struct, ConnWithCloser, that implements said interface within the quic module.

Closes TUN-10563

prechecks/resolvers.go

@@ -11,6 +11,7 @@ import (
 	"github.com/rs/zerolog"
 
 	"github.com/cloudflare/cloudflared/connection/dialopts"
+	cfdquic "github.com/cloudflare/cloudflared/quic"
 
 	"github.com/cloudflare/cloudflared/edgediscovery/allregions"
 )
@@ -44,7 +45,7 @@ type QUICDialer interface {
 		connIndex uint8,
 		logger *zerolog.Logger,
 		opts dialopts.DialOpts,
-	) (quic.Connection, error)
+	) (cfdquic.QUICConnection, error)
 }
 
 // ManagementDialer abstracts the TCP dial to api.cloudflare.com:443 used by