Show Encryption Authenticity warnings on messages in the timeline. (#3051)

* Initial implementation.

* Add developer option for showing timeline item authenticity.

* Refactor code to use new SendInfo.Status.

---------

Co-authored-by: Doug <douglase@element.io>

Package.resolved

@@ -5,8 +5,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/apple/swift-argument-parser",
       "state" : {
-        "revision" : "0fbc8848e389af3bb55c182bc19ca9d5dc2f255b",
-        "version" : "1.4.0"
+        "revision" : "41982a3656a71c768319979febd796c6fd111d5c",
+        "version" : "1.5.0"
       }
     },
     {
@@ -22,8 +22,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/jpsim/Yams",
       "state" : {
-        "revision" : "9234124cff5e22e178988c18d8b95a8ae8007f76",
-        "version" : "5.1.2"
+        "revision" : "3036ba9d69cf1fd04d433527bc339dc0dc75433d",
+        "version" : "5.1.3"
       }
     }
   ],