Adds experimental flag to the basyx.feature.search (AASQL)

[aaronzi]

Description of Changes

This PR marks the search feature (AAS Query Language) as experimental

[Copilot]

Pull Request Overview

This PR marks the BaSyx search feature (AAS Query Language) as experimental by updating configuration properties to include "experimental" in the feature flag hierarchy.

• Updates all search feature configuration properties from basyx.*.feature.search.* to basyx.*.feature.experimental.search.*
• Modifies Java classes to use the new experimental feature flag pattern
• Updates example configurations and application properties files to reflect the experimental status

Reviewed Changes

Copilot reviewed 36 out of 37 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
examples/BaSyxQueryLanguage/basyx/*.yml	Updates YAML configuration to nest search under experimental features
examples/BaSyxQueryLanguage/basyx/aas-env.properties	Updates property keys to include experimental flag
basyx.*/src/main/resources/application.properties	Updates commented configuration examples with experimental flag
basyx.-feature-search/src/test/resources/application.	Updates test configurations with experimental property keys
basyx.-feature-search/src/main/java/**/.java	Updates Java classes to reference experimental feature flags

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