Invalid Filename on Windows Due to Colon (:) in DATETIME_FORMAT_BACKTESTING

[Willdu69]

Description

On Windows, file creation fails because DATETIME_FORMAT_BACKTESTING = "%Y-%m-%d:%H:%M" (in file constant.py in investing_algorithm_framework/domain) produces filenames with : (e.g., OHLCV_BTC-EUR_BINANCE_2h_2023-12-15:06:00_2025-01-01:00:00.csv). Colons are not allowed in Windows filenames.

Steps to Reproduce

1. Run the framework on Windows with backtesting enabled.
2. Observe file creation failure.

Suggested Fix

Use a colon-free format (e.g., "%Y-%m-%d_%H-%M") or sanitize filenames to remove invalid characters.

[MDUYN]

Hey @Willdu69, thanks for pointing this out. I will pick it up.

[MDUYN]

This issue has been resolved in PR: #292

However, windows support is still unstable, because tests don't work on windows machines. This is an issue that will be worked on, you can find the issue here: #291