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Support for Excel Dropdown (Data Validation List) Generation #580

@prathzzzz

Description

@prathzzzz

It would be helpful to have built-in support for generating Excel dropdown fields (Data Validation Lists) when exporting or writing Excel files.

Currently, when creating a worksheet, we have to manually configure data validation rules to simulate dropdown behavior. Native support or helper utilities for defining dropdowns would simplify implementation and reduce boilerplate.

Use Case:
• Create predefined selectable values in a column (e.g., Status, Category, Location)
• Prevent invalid inputs and ensure consistent data entry
• Improve usability for end users working in Excel

Expected Behavior:
Provide an API or configuration option to:
• Define dropdown values for a cell or range
• Optionally reference values from another sheet or named range
• Support updating or clearing dropdowns

Example Scenario:
• Column C should allow only: ["Active", "Inactive", "Pending"]
• When exported, Excel should recognize it as a dropdown

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