* feat: add T4 menu dumping
* chore: align with latest changes
* feat: add T4 menu loading
Load T4 menulists and menu files through the shared menu parser.
Preserve T4-specific menu and listbox fields and cover loading, dumping, linking, and round-trip behaviour.
* chore: make flag fields unsigned
* chore: rename `expOperationEnum` -> `operationEnum`
* chore: use default enum numeration for T4 operationEnum
* chore: remove unused members of operationEnum
* chore: remove redundant op from operationEnum
* refactor: align T4 expression operand names with IW3
* chore: small adjustment to iw3,t4 types
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Co-authored-by: Jan Laupetin <[email protected]>
