Added edit icon

app/src/main/res/menu/action_edit.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/menu_bold"
+        android:icon="@drawable/baseline_format_bold_24"
+        android:title="@string/title_style_bold" />
+
+    <item
+        android:id="@+id/menu_italic"
+        android:icon="@drawable/baseline_format_italic_24"
+        android:title="@string/title_style_italic" />
+
+    <item
+        android:id="@+id/menu_link"
+        android:icon="@drawable/baseline_insert_link_24"
+        android:title="@string/title_style_link" />
+
+    <item
+        android:id="@+id/menu_image"
+        android:icon="@drawable/baseline_image_24"
+        android:title="@string/title_style_image" />
+
+    <item
+        android:id="@+id/menu_attachment"
+        android:icon="@drawable/baseline_attachment_24"
+        android:title="@string/title_add_attachment" />
+</menu>