Add two-way talk support for tp-link ipc camera (#1995)

* add tplink multitrans support

* 已经能成功播放音频了

* 初步能通讯了

* finish

* add tplink multitrans support

* 已经能成功播放音频了

* 初步能通讯了

* cleanup

* clean up

* Code refactoring for #1995

---------

Co-authored-by: Your Name <you@example.com>
Co-authored-by: Alex X <alexey.khit@gmail.com>

internal/multitrans/multitrans.go

@@ -0,0 +1,10 @@
+package multitrans
+
+import (
+	"github.com/AlexxIT/go2rtc/internal/streams"
+	"github.com/AlexxIT/go2rtc/pkg/multitrans"
+)
+
+func Init() {
+	streams.HandleFunc("multitrans", multitrans.Dial)
+}