Feat/mod dub v2 (#22)

* support tts elevenlabs to mod_dub

Signed-off-by: Quan HL <quan.luuhoang8@gmail.com>

* wip

Signed-off-by: Quan HL <quan.luuhoang8@gmail.com>

* wip

* wip

* fix aws race condition when 2 start transcribes are sent at the same instant

* wip

* wip

* wip

* allow queue play on track

* wip

Signed-off-by: Quan HL <quan.luuhoang8@gmail.com>

* revert change for aws transcribe

Signed-off-by: Quan HL <quan.luuhoang8@gmail.com>

* fix type

* wip

* wip

* rename parameters

* rename paramters

* wip

* wip

* wip

* wip

* wip

* bug: there exists scenarios where callback is not defined

* wip

* wip

* revert unintended changes to mod_google_transcribe

* fix bugs w/ streaming tts simplified arg parsing to use freeswitch conventions

---------

Signed-off-by: Quan HL <quan.luuhoang8@gmail.com>
Co-authored-by: Quan HL <quan.luuhoang8@gmail.com>

mod_dub/mpg_decode.h

@@ -0,0 +1,11 @@
+
+#ifndef MPG_DECODE_H
+#define MPG_DECODE_H
+
+#include <vector>
+#include <mpg123.h>
+#include "switch.h"
+
+std::vector<int16_t> convert_mp3_to_linear(mpg123_handle *mh, int gain, int8_t *data, size_t len);
+
+#endif