feat: add contributor, task state, and outline to project detail API

[Pradip-p]

Description

This PR adds the following to the project detail API:

• Contributor information
• Task state
• Outline of each task
• Also remove short description

Changes

• Updated @router.get("/{project_id}", tags=["Projects"], response_model=project_schemas.ProjectOut) to include the new fields.
• Updated schemas and relevant logic to handle the new data.

[nrjadkry]

How do you get the State ?
state of the tasks are in task_events table.

[Pradip-p]

@nrjadkry To get the state, I am joining the tasks table with the task_events table, where the state of the tasks is stored.

    SELECT
        tasks.id AS id,
        tasks.project_task_index AS project_task_index,
        tasks.outline AS outline,
        task_events.state AS state,
        users.name AS contributor
    FROM tasks
    LEFT JOIN task_events ON tasks.id = task_events.task_id
    LEFT JOIN users ON task_events.user_id = users.id
    WHERE tasks.project_id = :project_id;
"""