New voice message recording mode (#2051)

* Lock voice message recording

* Use the VoiceMessageCache to store the recording file

* Rework on some composer toolbar buttons

* Update accessibility labels for voice message recording button

* PreviewTests

ElementX/Resources/Assets.xcassets/images/composer/stop-recording.imageset/Contents.json

@@ -0,0 +1,16 @@
+{
+  "images" : [
+    {
+      "filename" : "stop-recording.svg",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "preserves-vector-representation" : true,
+    "template-rendering-intent" : "template"
+  }
+}

ElementX/Resources/Assets.xcassets/images/composer/stop-recording.imageset/stop-recording.svg

@@ -0,0 +1,5 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g id="stop_FILL1_wght400_GRAD0_opsz24 1">
+<path id="Vector" d="M6 16V8C6 7.45 6.19583 6.97917 6.5875 6.5875C6.97917 6.19583 7.45 6 8 6H16C16.55 6 17.0208 6.19583 17.4125 6.5875C17.8042 6.97917 18 7.45 18 8V16C18 16.55 17.8042 17.0208 17.4125 17.4125C17.0208 17.8042 16.55 18 16 18H8C7.45 18 6.97917 17.8042 6.5875 17.4125C6.19583 17.0208 6 16.55 6 16Z" fill="white"/>
+</g>
+</svg>