Ch 220 keycloak organizations sync on django

[filippomc]

Closes CH-220
Also addresses CH-219 - model updates

Implemented solution

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How to test this PR

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Sanity checks:

• The pull request is explicitly linked to the relevant issue(s)
• The issue is well described: clearly states the problem and the general proposed solution(s)
• In this PR it is explicitly stated how to test the current change
• The labels in the issue set the scope and the type of issue (bug, feature, etc.)
• The relevant components are indicated in the issue (if any)
• All the automated test checks are passing
• All the linked issues are included in one Sprint
• All the linked issues are in the Review state
• All the linked issues are assigned

Breaking changes (select one):

• The present changes do not change the preexisting api in any way
• This PR and the issue are tagged as a breaking-change and the migration procedure is well described above

Possible deployment updates issues (select one):

• There is no reason why deployments based on CloudHarness may break after the current update
• This PR and the issue are tagged as alert:deployment

Test coverage (select one):

• Tests for the relevant cases are included in this pr
• The changes included in this pr are out of the current test coverage scope

Documentation (select one):

• The documentation has been updated to match the current changes
• The changes included in this PR are out of the current documentation scope

Nice to have (if relevant):

• Screenshots of the changes
• Explanatory video/animated gif

[Copilot]

Pull Request Overview

This PR migrates the CloudHarness model library from a custom OpenAPI-based system to Pydantic v2, addressing Keycloak organizations synchronization requirements and implementing significant architectural improvements.

• Replaces custom Flask-based model generation with modern Pydantic v2 models
• Implements enhanced model access patterns with backward compatibility through monkey patches
• Updates dependency management and testing infrastructure for better maintainability

Reviewed Changes

Copilot reviewed 165 out of 167 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools/deployment-cli-tools/ch_cli_tools/utils.py	Adds string conversion for environment variable values
tools/deployment-cli-tools/ch_cli_tools/skaffold.py	Updates property names from buildArgs to build_args
tools/deployment-cli-tools/ch_cli_tools/openapi.py	Changes OpenAPI generator from python-flask to python
tools/deployment-cli-tools/ch_cli_tools/configurationgenerator.py	Adds string conversion for tag and value parameters
libraries/models/tox.ini	Updates dependencies to use modern Pydantic v2 stack
libraries/models/test/test_deserialize.py	Adds comprehensive property access tests for Pydantic models
libraries/models/test/resources/values.yaml	Converts numeric values to strings throughout YAML configuration
libraries/models/test-requirements.txt	Updates test dependencies with newer versions
libraries/models/setup.py	Simplifies dependencies to focus on Pydantic v2 core libraries
libraries/models/setup.cfg	Adds flake8 configuration for code style
libraries/models/pyproject.toml	Adds modern Python packaging configuration
libraries/models/docs/*.md	Generates new documentation for Pydantic-based models
libraries/models/cloudharness_model/*.py	Complete rewrite of model classes using Pydantic v2 with enhanced utilities

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[afonsobspinto]

Looks good BUT you should merge this in first