Add comprehensive data storage imaging system with timezone support - Added TimezoneType enum with UTC offset fields and conversion methods - Added timezone fields to Organization (required, defaults to PACIFIC), User (nullable), and Member (nullable) - Updated EmbRecordState to use LocalDateTime for UTC date/time storage - Created 16 new entity classes for imaging system (Img, ImgFolder, ImgDat, etc.) - Created 5 new enum types (ImageAssocType, ImageMimeType, ImageSetType, etc.) - Created 10 ne...