Construction Calculator A1

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* Multiple language support added
* Dam & Sewage Calculations: Added capacity, flow, and tank design.
* Water Supply & Rail: New tools for demand, pump power, gradient, and braking.
* Road & Brickwork: Pavement, slope, bond types, and paver block updates.
* Excavation: One trip volume and trip count.
* Other Enhancements: BOQ sharing, sign-in, quiz, and location-based units.