[x2t] Add saving of templates to fromDocxDir, fromXlsxDir, fromPptxDir
[x2t] Add saving of templates to fromDocxDir, fromXlsxDir, fromPptxDir

ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core,ONLYOFFICE/core