Integration with External Data Sources

[git-union-dev]

Description

Enable the app to retrieve and utilize data from external sources to aid estimation.

Acceptance criteria

• The app allows users to import data from popular sources such as CSV files or online databases.
• Imported data can be mapped to specific fields in the app for automatic population.
• The data integration feature supports both one-time imports and regular updates from external sources.
• Imported data is validated and converted into appropriate units if necessary.