[VuLe] Pull request for Mana do

[vule96]

I've created the pull request on May 9th, 2020 in order to submit my work:

• Handle all about the to-do list business:
  • Add task when user type something and press Enter on the input.
  • Delete existing task by clicking the trash icon on the right of each task.
  • Edit existing task by clicking double on the label name of each task.
  • Filter tasks by clicking 3 button options: "ALL", "ACTIVE", "COMPLETED".
  • Check or uncheck all tasks by clicking the checkbox on the bottom left of the modal.
  • Clear all tasks by clicking the "Clear all todos" button on the bottom right of the modal.
• Localstorage to store the data.
• Applied Typescript in this project.
• Re-organized the structure project.
• Unit testing.