[Tech] Introduce the ResourceFactory utility; streamline virtual resource creating logic

[smiakchilo]

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[Copilot]

Pull request overview

This PR introduces a new internal ResourceFactory utility to streamline creation of virtual Sling Resource instances (primarily ValueMapResource) and refactors multiple option/list-related components and tests to use it instead of ad-hoc ValueMapResource / ValueMapDecorator builders.

Changes:

• Added ResourceFactory with fluent builders (including nested-property-to-child-resource expansion and Granite field helpers) plus a dedicated test suite.
• Replaced several direct ValueMapResource constructions in option source resolvers, list utilities, and servlets with ResourceFactory.
• Removed the old ValueMapBuilder helper and renamed ListResourceUtil.mapToValueMapResources() to mapToResources().

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
core/src/main/java/com/exadel/aem/toolkit/core/utils/ResourceFactory.java	New fluent builder for virtual resources/fields; replaces scattered ValueMapResource usage.
core/src/test/java/com/exadel/aem/toolkit/core/utils/ResourceFactoryTest.java	New tests covering path normalization, children, nested properties, and multifield wrapper behavior.
core/src/main/java/com/exadel/aem/toolkit/core/lists/utils/ListResourceUtil.java	Replaces ValueMapResource creation helpers with ResourceFactory; renames map conversion method.
core/src/test/java/com/exadel/aem/toolkit/core/lists/utils/ListResourceUtilTest.java	Updates test to call mapToResources().
core/src/main/java/com/exadel/aem/toolkit/core/lists/utils/ListHelper.java	Switches list-item virtual resource creation to ResourceFactory.
core/src/main/java/com/exadel/aem/toolkit/core/lists/servlets/ItemComponentsServlet.java	Uses ResourceFactory to build datasource option resources.
core/src/main/java/com/exadel/aem/toolkit/core/optionprovider/services/impl/resolvers/InlineOptionSourceResolver.java	Uses ResourceFactory and Map-based properties instead of ValueMapBuilder/ValueMapResource.
core/src/main/java/com/exadel/aem/toolkit/core/optionprovider/services/impl/resolvers/HttpOptionSourceResolver.java	Uses ResourceFactory; changes createValueMap to return Map<String,Object>.
core/src/main/java/com/exadel/aem/toolkit/core/optionprovider/services/impl/resolvers/EnumResolverHelper.java	Uses ResourceFactory and plain Maps for option resources.
core/src/main/java/com/exadel/aem/toolkit/core/optionprovider/services/impl/resolvers/ConstantsResolverHelper.java	Uses ResourceFactory and Map-based reduction logic; removes ValueMapBuilder usage.
core/src/main/java/com/exadel/aem/toolkit/core/optionprovider/services/impl/resolvers/ValueMapBuilder.java	Removed (superseded by Map + ResourceFactory).
core/src/test/java/com/exadel/aem/toolkit/core/configurator/models/internal/RenderConditionTest.java	Refactors test resource creation to use ResourceFactory.
core/src/test/java/com/exadel/aem/toolkit/AllTests.java	Adds ResourceFactoryTest to the aggregated test suite.

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