[Feature][convert] Split BigDecimalColumn

[Paddy0523]

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• [X] I had searched in the issues and found no similar feature requirement.

Description

1. Java.math.bigdecimal (String) constructor has poor performance
2. Now float, double, long, int, short are all transmitted by BigDecimalColumn, the structure is not clear
3. Precision loss occurs when BigDecimal transfers float and double data, such as 3.1234123F

Use case

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Related issues

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• [X] Yes I am willing to submit a PR!

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