adding UI Lab

Labs/Lab5_UILabs/.gitignore

Labs/Lab5_UILabs/Lab-UserInterface.pdf

Labs/Lab5_UILabs/UILabs.mp4

Labs/Lab5_UILabs/app/build.gradle

Labs/Lab5_UILabs/app/src/androidTest/res/drawable/.gitignore

Labs/Lab5_UILabs/app/src/main/AndroidManifest.xml

.../src/main/java/course/labs/todomanager/AddToDoActivity.kt

...abs/app/src/main/java/course/labs/todomanager/ToDoItem.kt

.../src/main/java/course/labs/todomanager/ToDoListAdapter.kt

.../main/java/course/labs/todomanager/ToDoManagerActivity.kt

...ab5_UILabs/app/src/main/res/drawable-hdpi/ic_launcher.png

...ab5_UILabs/app/src/main/res/drawable-ldpi/ic_launcher.png

...ab5_UILabs/app/src/main/res/drawable-mdpi/ic_launcher.png

...b5_UILabs/app/src/main/res/drawable-xhdpi/ic_launcher.png

...5_UILabs/app/src/main/res/drawable-xxhdpi/ic_launcher.png

Labs/Lab5_UILabs/app/src/main/res/layout/add_todo.xml

Labs/Lab5_UILabs/app/src/main/res/layout/header_view.xml

Labs/Lab5_UILabs/app/src/main/res/layout/recycle_view.xml

Labs/Lab5_UILabs/app/src/main/res/layout/todo_item.xml

Labs/Lab5_UILabs/app/src/main/res/values-sw600dp/dimens.xml