feat(api): replace dict by request objects for pt APIs

[jonperron]

Changelog:

• Add requests objects for pt APIs
• Update functions used to call APIs to use requests objects rather than dictionnaries
• Update tests

[Copilot]

Pull Request Overview

This PR refactors public transportation API methods to use typed request objects instead of dictionaries for parameter passing. The change improves type safety and reduces code duplication by consolidating filter logic in a base class.

• Introduces new request classes for each PT entity type (VehicleJourney, StopPoint, StopArea, Route, etc.)
• Refactors API client methods to accept a single BasePTEntityRequest parameter instead of multiple individual parameters
• Updates all tests to instantiate and pass the appropriate request objects

Reviewed Changes

Copilot reviewed 34 out of 34 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
navitia_client/entities/request/base_entity_request.py	Adds to_filters() method to convert request object to dictionary
navitia_client/entities/request/public_transportations/*.py	New request classes for each PT entity type
navitia_client/entities/request/public_transportations/__init__.py	Exports all request classes
navitia_client/entities/request/public_transportations/___init__.py	Duplicate file with incorrect filename (triple underscores)
navitia_client/client/apis/public_transportation_apis/*.py	Refactored to use request objects instead of individual parameters
tests/client/apis/public_transportation_apis/*.py	Updated to instantiate and use new request objects

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