Add --audio-bit-rate

Add an option to configure the audio bit-rate.

app/data/bash-completion/scrcpy

@@ -2,6 +2,7 @@ _scrcpy() {
     local cur prev words cword
     local opts="
         --always-on-top
+        --audio-bit-rate=
         -b --video-bit-rate=
         --crop=
         -d --select-usb

app/data/zsh-completion/_scrcpy

@@ -9,6 +9,7 @@ local arguments
 
 arguments=(
     '--always-on-top[Make scrcpy window always on top \(above other windows\)]'
+    '--audio-bit-rate=[Encode the audio at the given bit-rate]'
     {-b,--video-bit-rate=}'[Encode the video at the given bit-rate]'
     '--crop=[\[width\:height\:x\:y\] Crop the device screen on the server]'
     {-d,--select-usb}'[Use USB device]'