Add call link details screen scaffolding.

app/src/main/java/org/thoughtcrime/securesms/database/CallLinkTable.kt

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.database
 
 import android.content.Context
 import org.signal.core.util.logging.Log
+import org.thoughtcrime.securesms.conversation.colors.AvatarColor
 
 /**
  * Table containing ad-hoc call link details
@@ -21,4 +22,11 @@ class CallLinkTable(context: Context, databaseHelper: SignalDatabase) : Database
       )
     """
   }
+
+  data class CallLink(
+    val name: String,
+    val identifier: String,
+    val avatarColor: AvatarColor,
+    val isApprovalRequired: Boolean
+  )
 }