Add visualisation of the account's third party IDs in the account editor.

A category won't be shown if there are no relevant IDs (will add the ability to add new ones later).

Part of network/neochat#565

![image](/uploads/7da00b0b4acf90d145c09969ac2a91e1/image.png)

src/settings/CMakeLists.txt

@@ -32,4 +32,5 @@ qt_add_qml_module(settings
         IgnoredUsersDialog.qml
         NotificationRuleItem.qml
         ThemeRadioButton.qml
+        ThreePIdCard.qml
 )