Localization for plugin.xml and Warning Fixes

[xterao]

Summary
This PR resolves localization warnings in plugin.xml and addresses additional warnings detected in build.gradle.

Changes

• Fixed properties in plugin.xml that were showing localization warnings.
• Created a message bundle file for configuration-related strings.
• Added i18n support so that localized messages can be properly referenced from plugin.xml.
• Updated build.gradle to resolve existing warnings and ensure a cleaner build process.

Impact

• Removes unnecessary warnings in both plugin.xml and build.gradle.
• Improves maintainability by centralizing translatable strings.
• Prepares the plugin for better internationalization support.
• Provides a more stable and warning-free build configuration.

[xterao]

An error occurred in build.gradle requiring explicit task type specification when using tasks.register.
Without this fix, Spotless formatting cannot be executed, resulting in a build error. Therefore, this issue has been addressed together in this update.