Refactor Gluten ExpressionConverter
- Dominant language
- Scala
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Description
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
Currently, when supporting a new spark expression, it needs to add a new XXXTransformer for it, but there are many repetitive code.
sub task:
- [x] Simplify ExpressionConverter, remove repetitive code; #680
- [ ] Use the module `substrait-java` to generate scalar function substrait;
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