Feat: add project status field based on task counts

[Pradip-p]

Description:

This PR adds a new status field to the project response model. The status is determined based on the counts of ongoing and completed tasks for each project.

Feature Details:

• The status field is automatically set based on the logic:
  • "not-started" if there are no ongoing tasks.
  • "ongoing" if there are tasks in progress.
  • "completed" if all tasks are completed.