Update C++ tsfile-cli command surface and data workflows

[SpriCoder]

Summary

• add CLI contract and end-to-end tests for command dispatch, supported formats, argument validation, write/import behavior, export behavior, tag filters, and edge cases
• align command dispatch, top-level help, command help, version handling, and singleton option validation with the requirement document
• remove unsupported command surface and narrow regular output formats to table, ndjson, and csv
• update write syntax to explicit --tag / --field declarations and explicit --input / --stdin input selection
• harden write failures for existing output targets, non-regular input paths, strict timestamp lexemes, bad data, and atomic output cleanup
• return schema rows with model, object, column, category, data_type, encoding, and compression
• align stats and count output contracts with the documented model/object/column fields, table tag grouping, null counts, time ranges, and source fields
• require explicit scope for multi-object head / cat queries and reject offset with zero limit
• align machine value serialization for null CSV cells, INT64/TIMESTAMP NDJSON values, and BLOB hex values
• add single-object and multi-object export support with numbered output files and a manifest
• refresh the C++ tools README for the updated usage

Tests

• C++ Spotless check
• C++ CLI contract and end-to-end tests
• Full C++ TsFile_Test binary
• Git whitespace check

Appendix

• Feishu requirement document: https://apache-iotdb-project.feishu.cn/docx/Hbd3dA7lco78ofxAn5jc3talnkb