### What changes were proposed in this pull request?

So far, we have limited test case coverage about implicit type casting. We need to draw a matrix to find all the possible casting pairs.
- Reorged the existing test cases
- Added all the possible type casting pairs
- Drawed a matrix to show the implicit type casting. The table is very wide. Maybe hard to review. Thus, you also can access the same table via the link to [a google sheet](https://docs.google.com/spreadsheets/d/19PS4ikrs-Yye_mfu-rmIKYGnNe-NmOTt5DDT1fOD3pI/edit?usp=sharing

).

SourceType\CastToType | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | BinaryType | BooleanType | StringType | DateType | TimestampType | ArrayType | MapType | StructType | NullType | CalendarIntervalType | DecimalType | NumericType | IntegralType
------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ | ------------ |  -----------
**ByteType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(3, 0) | ByteType | ByteType
**ShortType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(5, 0) | ShortType | ShortType
**IntegerType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(10, 0) | IntegerType | IntegerType
**LongType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(20, 0) | LongType | LongType
**DoubleType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(30, 15) | DoubleType | IntegerType
**FloatType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(14, 7) | FloatType | IntegerType
**Dec(10, 2)** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | X    | X    | StringType | X    | X    | X    | X    | X    | X    | X    | DecimalType(10, 2) | Dec(10, 2) | IntegerType
**BinaryType** | X    | X    | X    | X    | X    | X    | X    | BinaryType | X    | StringType | X    | X    | X    | X    | X    | X    | X    | X    | X    | X
**BooleanType** | X    | X    | X    | X    | X    | X    | X    | X    | BooleanType | StringType | X    | X    | X    | X    | X    | X    | X    | X    | X    | X
**StringType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | BinaryType | X    | StringType | DateType | TimestampType | X    | X    | X    | X    | X    | DecimalType(38, 18) | DoubleType | X
**DateType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | StringType | DateType | TimestampType | X    | X    | X    | X    | X    | X    | X    | X
**TimestampType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | StringType | DateType | TimestampType | X    | X    | X    | X    | X    | X    | X    | X
**ArrayType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | ArrayType* | X    | X    | X    | X    | X    | X    | X
**MapType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | MapType* | X    | X    | X    | X    | X    | X
**StructType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | StructType* | X    | X    | X    | X    | X
**NullType** | ByteType | ShortType | IntegerType | LongType | DoubleType | FloatType | Dec(10, 2) | BinaryType | BooleanType | StringType | DateType | TimestampType | ArrayType | MapType | StructType | NullType | CalendarIntervalType | DecimalType(38, 18) | DoubleType | IntegerType
**CalendarIntervalType** | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | X    | CalendarIntervalType | X    | X    | X
Note: ArrayType\*, MapType\*, StructType\* are castable only when the internal child types also match; otherwise, not castable
### How was this patch tested?
N/A

Author: gatorsmile <gatorsmile@gmail.com>

Closes #15691 from gatorsmile/implicitTypeCasting.

(cherry picked from commit 9ddec863)
Signed-off-by: gatorsmile <gatorsmile@gmail.com>