feat: add automated glossary consistency validation logic

[yunzhexu94-crypto]

• Description:

  ### Description
  This pull request introduces the core backend verification module for the automated glossary checker feature. It programmatic structures segment validation loops by cross-referencing source token streams against registered terminology dictionaries.
  
  ### What it adds:
  - Implements the foundational `GlossaryConsistencyValidator` component inside the `org.omegat.core.matching` package.
  - Safely intercepts mismatch variances where a source segment triggers a registered term but the translator's input omits the mandatory localization string.
  
  ### Compliance & Quality:
  - Adheres strictly to standard separation of concerns by keeping processing diagnostics separated from UI presentation listeners.
  - Includes safe null-pointer and blank string boundary isolation.

[miurahr]

Please don't merge unrelated files for feature enhancements; especially AI related dot folders and files.
Please add license headedr in the Java source files.
Please fix your code or changes to pass all the CI/CD checks.