This pr makes three changes to the display of complex types：
1. NULL value in complex types refers to being displayed as `null`, not `NULL`
2. struct type is displayed as "column_name": column_value
3. Time types such as `datetime` and `date`, are displayed with double quotes in complex types. like
`{1, "2023-10-26 12:12:12"}`
This pr also do a code refactor:
1. nesting_level is set to a member variable of the `DataTypeSerDe`, rather than a parameter in methods.
What's more, this pr fix a bug that fileSize is not correct, introduced by this pr: #25854
1. To ensure compatibility with the original optimizer, expose the non-lambda signature of highorder function externally.
2. fix some bugs in toSql function in the original optimizer
Now we can not support streamload with column which is map/array nested map/array
serde can do this now , so we can replace it
Notice. if item data in complex type data is empty we just return error, instead of makeup default value , because now we can not define right default for complex type
1. rename TVFProperties to Properties
2. add generating function explode and explode_outer
3. fix concat_ws could not apply on array
4. check tokenize second argument format on FE
5. add test case for concat_ws, tokenize, explode, explode_outer and split_by_string
