feat: added loading bars centrally cuz file wise approach resulted in…

[Satvik-Singh192]

… pytest failing a lot

✨ Add tqdm-Based Progress Bars for Long-Running Operations

Closes #32

📝 Description

This PR introduces tqdm-based progress bars to improve user experience during long-running operations such as:

• Synthetic data generation
• Factor computation
• Backtest execution

Previously, these steps ran silently, making it difficult for users to estimate how long a process would take. This PR resolves that by adding lightweight progress indicators without altering existing workflows.

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✅ Changes Made

1. Synthetic Data Generation

• Added a tqdm progress bar that displays generation progress for each symbol.

2. Factor Computation

• Added tqdm progress bars for factor-wise averaging operations.

3. Backtest Execution

• Wrapped the internal backtest loop with tqdm to visualize iteration progress.

4. Minimal & Non-Intrusive Changes

• No refactoring or redesign of core functionality.
• Only small patches added where needed to integrate progress bars cleanly.

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