Added task list as a potential button that you can add to toolbar.

Author: khaykov

aztec/src/main/kotlin/org/wordpress/aztec/toolbar/ToolbarAction.kt

@@ -55,6 +55,12 @@ enum class ToolbarAction constructor(
             ToolbarActionType.BLOCK_STYLE,
             setOf(AztecTextFormat.FORMAT_ORDERED_LIST),
             R.layout.format_bar_button_list_ordered),
+    TASK_LIST(
+            R.id.format_bar_button_list_task,
+            R.drawable.format_bar_button_tasklist_selector,
+            ToolbarActionType.BLOCK_STYLE,
+            setOf(AztecTextFormat.FORMAT_TASK_LIST),
+            R.layout.format_bar_button_list_task),
     INDENT(
             R.id.format_bar_button_indent,
             R.drawable.format_bar_button_indent_selector,

aztec/src/main/res/layout/format_bar_button_list_task.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.wordpress.aztec.toolbar.RippleToggleButton xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/format_bar_button_list_task"
+    style="@style/FormatBarButton"
+    android:layout_width="wrap_content"
+    android:layout_height="fill_parent"
+    android:contentDescription="@string/item_format_task_list" />