feat(task-hierarchy): implement recursive task estimation and reset functionality

- Added SQL scripts to fix task hierarchy and reset parent task estimations to zero, ensuring accurate estimation calculations.
- Introduced a migration for a recursive task estimation function that aggregates estimations from subtasks, enhancing task management.
- Updated controllers to utilize recursive estimations for displaying task data, improving accuracy in task progress representation.
- Implemented a new API route to reset parent task estimations, allowing for better task management and data integrity.

worklenz-backend/reset-existing-parent-estimations.sql

@@ -0,0 +1,29 @@
+-- Reset all existing parent task estimations to 0
+-- This script updates all tasks that have subtasks to have 0 estimation
+
+UPDATE tasks 
+SET total_minutes = 0
+WHERE id IN (
+    SELECT DISTINCT parent_task_id 
+    FROM tasks 
+    WHERE parent_task_id IS NOT NULL 
+    AND archived = false
+)
+AND total_minutes > 0
+AND archived = false;
+
+-- Show the results
+SELECT 
+    t.id,
+    t.name,
+    t.total_minutes as current_estimation,
+    (SELECT COUNT(*) FROM tasks WHERE parent_task_id = t.id AND archived = false) as subtask_count
+FROM tasks t
+WHERE id IN (
+    SELECT DISTINCT parent_task_id 
+    FROM tasks 
+    WHERE parent_task_id IS NOT NULL 
+    AND archived = false
+)
+AND archived = false
+ORDER BY t.name;