feat(tasking): add projects feature and restructure backend

- Restructure backend code into Tasking module with organized endpoints
  - Add Project and Sprint entities with database migrations
  - Implement CRUD endpoints for projects (create, get, rename, delete)
  - Refactor task endpoints into Tasking namespace
  - Add integration test suite with Testcontainers and Respawn
  - Refactor frontend to use Pinia stores with dedicated API clients
  - Add DueDatePicker and DueTimePicker components for task scheduling
  - Add environment configuration for API base URL
  - Add infrastructure setup scripts for Docker/Postgres

start-infrastructure.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Set global configuration
+DATA_ROOT="/var/tasker"
+POSTGRES_VERSION="latest"
+MONGODB_VERSION="latest"
+
+# Start PostgreSQL
+docker run -d \
+  --name TASKER_POSTGRES \
+  -v "${DATA_ROOT}/postgres:/var/lib/postgresql/data" \
+  -p 5400:5432 \
+  -e POSTGRES_USER=sa \
+  -e POSTGRES_PASSWORD=P@ssword123! \
+  -e POSTGRES_DB=Tasker \
+  postgres:$POSTGRES_VERSION
+
+# Start MongoDB
+docker run -d \
+  --name TASKER_MONGODB \
+  -v "${DATA_ROOT}/mongodb:/data/db" \
+  -p 5401:27017 \
+  mongo:$MONGODB_VERSION
+