Add time tracking

[leandertolksdorf]

As a freelancer, I want to be able to track the time spent on different tasks.

Description

Every timespan tracked must be assigned to a project and can be assigned to a task.
Tracking can be done on the go, pressing a start and a stop button, or afterwards, by entering a start and an end time.

Database

Create a table timetracking with columns:

• id: uuid
• project: fk
• task: fk | null
• description: string | null
• start: timestamp
• end: timestamp | null

Rules:

• start < end
• task must be assigned to project

Frontend