Added delete tasks and executions

• Changed a bit the presentation of the executions to show them better
• Changed the edit execution from clicking on the execution to click on edit button as in tasks
• Added a functional delete button on executions
• Make work the delete button for tasks

Added edit execution feature

• On click on an execution it shows the edit view and lets you modify the data

Still not the MVP

Features:

• Create/edit/show tasks
• Create/show executions of tasks
• Light/dark mode
• Dynamic material design 3 colors