feat: support for reading shared formulas in xlsx files

[delei]

Purpose of the pull request

Close #571

What's changed?

• Add shared formula handling logic in CellFormulaTagHandler
• Introduce new attributes for shared formula in ExcelXmlConstants
• Update XlsxReadSheetHolder to store shared formula information

Checklist

• I have read the Contributor Guide.
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

[Copilot]

Pull Request Overview

This PR adds support for reading shared formulas in XLSX files, which allows for more efficient storage and processing of repeated formulas across multiple cells.

• Added shared formula handling logic to track and resolve formula references
• Introduced new XML attributes for identifying and indexing shared formulas
• Enhanced XlsxReadSheetHolder to store shared formula mappings

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
CellFormulaTagHandler.java	Main implementation for parsing and resolving shared formulas from XML
XlsxReadSheetHolder.java	Added storage for shared formula index and mapping
ExcelXmlConstants.java	Added constants for shared formula XML attributes
CellDataDataTest.java	Added test case for reading formulas from XLSX files
CellDataReadData.java	Removed empty comment block

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[alaahong]

celldata_formula_sum.xlsx
how about attached file~

[gphwxhq]

工作簿1.xlsx this file seems like dismatch
file content:

formula in code: