link existing account: add copy button

GitLab: #1635
Change-Id: Id3f3c2dc628f044a3dec3731d14261dd45e5156c

jami-android/app/src/main/res/drawable/baseline_content_copy_28.xml

+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:tint="?attr/colorControlNormal"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="28dp"
+    android:height="28dp">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M16,1L4,1c-1.1,0 -2,0.9 -2,2v14h2L4,3h12L16,1zM19,5L8,5c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h11c1.1,0 2,-0.9 2,-2L21,7c0,-1.1 -0.9,-2 -2,-2zM19,21L8,21L8,7h11v14z"/>
+</vector>
\ No newline at end of file

jami-android/app/src/main/res/layout/frag_link_device.xml

@@ -56,13 +56,14 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:background="@drawable/background_pin_code"
+            android:drawablePadding="10dp"
             android:paddingHorizontal="20dp"
             android:paddingVertical="12dp"
             android:textColor="@color/colorPrimary"
             android:textSize="26sp"
-            tools:text="abcdefgh-12345678"
-            app:drawableEndCompat="@drawable/baseline_content_copy_28_color_primary"
-            android:drawablePadding="10dp"/>
+            app:drawableEndCompat="@drawable/baseline_content_copy_28"
+            app:drawableTint="@color/colorPrimary"
+            tools:text="abcdefgh-12345678" />
 
         <TextView
             android:id="@+id/pin_time_valid"