Feat: add events filtering options to the Postman

[VGau]

Description

Enhance the Postman by integrating event filtering capabilities. This will allow users to filter events based on predefined conditions before processing them. The new functionality should support logical operations (AND, OR) and various property-based conditions.

Motivation

Implementing event filtering will provide enhanced flexibility for events filtering.

Tasks

• Add new filtering configuration params to the Postman
• Integrate the filter configuration into the existing events processing service.
• Add unit tests

Acceptance criteria

• Postman configuration updated
• Postman events listening service updated
• Unit tests added.