Add convention-aware updateManagedDependency API

[gnodet]

Summary

Add a public method to PomEditor.Dependencies that adds or updates a managed dependency while following the project's detected conventions (property creation, naming convention).

Current behavior

updateManagedDependency(boolean upsert, Coordinates coordinates) always inlines the raw version string when creating a new managed dependency (e.g., <version>2.0.13</version>). It does not create a version property or follow the project's detected conventions.

The convention-aware logic exists internally (in addAligned / alignDependency paths via resolveConventions, upsertVersionProperty, resolvePropertyName), but there's no public equivalent for managed dependency operations.

Proposed API

Something like:

// Convention-aware: detects project style and creates properties if needed
public boolean updateManagedDependencyAligned(boolean upsert, Coordinates coordinates);
public boolean updateManagedDependencyAligned(boolean upsert, Coordinates coordinates, AlignOptions options);

This should:

1. Detect project conventions via resolveConventions(options)
2. If versionSource == PROPERTY: generate the property name, call upsertVersionProperty, and use ${propName} as the version
3. Call updateManagedDependency with the (possibly property-ref) version

Workaround

Users can currently combine detectConventions() + AlignOptions.generatePropertyName() + properties().updateProperty() + updateManagedDependency() manually, but this duplicates internal logic and is error-prone.

Claude Code on behalf of Guillaume Nodet