feat: compare project allocations with task estimates and timesheet hours

[MusaleTejas]

Added a comparison breakdown on resource allocation cards to show:

• Project allocation (total hours allocated)
• Planned task effort (sum of expected hours for active tasks assigned to the employee)
• Actual logged hours (from timesheets)
• Allocation gap (allocation minus planned task effort)

This addresses #1740 so resource managers can see if an employee has enough tasks planned relative to their allocated project hours.

Changes made:

• Added a helper get_allocation_task_and_logged_hours in query.py to query active tasks assigned to the employee under the project using ToDo assignments, filter by the allocation date range, and calculate actual logged hours.
• Loaded total_allocated_hours and mapped these stats onto allocation results returned in the team and project view APIs (team.py and project.py).
• Added the fields to ResourceAllocationProps and rendered a simple 2-column grid in ResourceAllocationCard to display the stats.