(feat) helm charts

[MarcoFuykschot]

Added helm chart version control in project-version

[Copilot]

Pull Request Overview

This PR adds support for Helm chart projects to the project version management tool by implementing detection and version management for Chart.yaml files.

• Adds a new HelmChartProject struct that implements the Project trait to handle Helm chart version operations
• Integrates Helm chart detection into the existing project detection logic
• Includes comprehensive test coverage for Chart.yaml file handling

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/project.rs	Implements HelmChartProject struct with version parsing, updating, and project detection
tests/test_project.rs	Adds comprehensive test for Helm chart project detection and version management
README.md	Documents the new Helm chart support in the feature list
Cargo.toml	Adds serde_yaml dependency for YAML parsing

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