Comprehensive Productivity Dashboard & CLI Enhancement for PyEveryday

[nova-550]

This pull request delivers a major upgrade to the PyEveryday project by introducing a centralized, extensible daily dashboard and robust CLI flag support for all productivity modules. Key improvements include:

Centralized Dashboard Script:

Aggregates live summaries from Todos, Reminders, Pomodoro Timer, Time Tracking, and Motivational Quotes into a single, user-friendly view.
Each section is modular and can be toggled via a JSON config file.
Summaries are dynamically generated from each module’s real data, not placeholders.
CLI Flag Support for All Modules:

All productivity scripts (todo_manager.py, reminder_system.py, pomodoro_timer.py, time_tracker.py) now support advanced command-line usage via argparse.
Users can add, list, complete, and manage tasks, reminders, pomodoro sessions, and time tracking directly from the terminal.
The dashboard now has an additional QuoteFetcher class for motivational quotes, improving reliability.

All features have been tested:

• Dashboard output
• CLI commands
• Module integration.

The codebase is clean, modular, and ready for review and merging.
This PR makes PyEveryday more user-friendly, maintainable, and powerful for both everyday and advanced users.

resolves #49
resolves #50

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