common: Switch frame storage type from vector to deque

Deque seems more logical (and faster) since elements are
pushed back and taken from the front.

src/reception_flow.cc

@@ -178,7 +178,7 @@ uvgrtp::frame::rtp_frame *uvgrtp::reception_flow::pull_frame(ssize_t timeout_ms)
 
     frames_mtx_.lock();
     auto frame = frames_.front();
-    frames_.erase(frames_.begin());
+    frames_.pop_front();
     frames_mtx_.unlock();
 
     return frame;

src/reception_flow.hh

@@ -10,6 +10,7 @@
 #include <thread>
 #include <condition_variable>
 #include <atomic>
+#include <deque>
 
 namespace uvgrtp {
 
@@ -175,7 +176,7 @@ namespace uvgrtp {
 
             /* If receive hook has not been installed, frames are pushed to "frames_"
              * and they can be retrieved using pull_frame() */
-            std::vector<uvgrtp::frame::rtp_frame *> frames_;
+            std::deque<uvgrtp::frame::rtp_frame *> frames_;
             std::mutex frames_mtx_;
 
             void *recv_hook_arg_;