Use Gradle version catalog for plugins and OpenRemote dependencies

[wborn]

Description

• Migrated Gradle plugin declarations from the legacy apply plugin syntax to plugins {} blocks across the root project and extension modules.
• Centralized the Axion Release, Nexus Publish, Test Logger, JaCoCo, and OpenRemote versions in gradle/libs.versions.toml.
• Replaced inline OpenRemote Manager, Model, and Test dependency declarations with version catalog aliases.
• Configured the Test Logger plugin centrally for Java projects.
• Configured the JaCoCo tool version through the version catalog.
• Removed redundant plugin version properties from gradle.properties and plugin declarations from settings.gradle.
• Updated the IDEA Extended plugin from version 1.2 to 1.4.1.
• Removed the obsolete resolveProject and resolveTask helper methods.
• Simplified several Gradle task and plugin declarations.
• Aligned the Gradle configuration with the version catalog approach used in OpenRemote core and the custom project.

See also:

• Improve Gradle plugin and dependency version catalog configuration openremote#3058
• Use Gradle plugin and dependency version catalog configuration custom-project#78

Checklist

• 1. Acceptance criteria of the linked issue(s) are met
• 2. Tests are written and all tests pass
• 3. Changes are manually tested by you and the reviewer
• 4. Documentation is written or updated