nwc: Coinos

This PR adds a button to allow users to easily connect to Coinos
Also cleans up and organizes assets.

Changelog-Added: Coinos connection button in Wallet view

Signed-off-by: ericholguin <ericholguin@apache.org>

damus/Assets.xcassets/Illustrations/encrypted-message.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "encrypted-message.png",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}