Introduce CustomException

Description

Screenshots

Technical details

Tests

Issues

10 commandments of code reviews

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Summary by CodeRabbit

Release Notes

• New Features

  • Introduced a new CustomException class for improved error handling across the application.
  • Enhanced exception handling in various components to provide clearer error categorization (e.g., TIMEOUT_ERROR, AUTHENTICATION_ERROR).

• Bug Fixes

  • Streamlined error handling logic to ensure consistent responses to authentication and data loading errors.

• Documentation

  • Updated Swedish translation for the privacy description string to improve clarity.