[C++][Parquet] arrow Decimal32/Decimal64 write Parquet and testing

[mapleFU]

Describe the enhancement requested

The previous patch[1] has allowing Decimal32/Decimal64 type in arrow. However, Parquet has poor support for them now. We need more testing and test for it.

We now have store_decimal_as_integer. This should also working for decimal32/decimal64.

[1] #43957

Component(s)

C++, Parquet

[curioustien]

@mapleFU Is this task still available? I'd like to give it a try

[wgtmac]

@curioustien Feel free to take it :)

[curioustien]

take

[curioustien]

@wgtmac Here is my attempt #45351 on this task. I'm not sure whether I understood all the requirements of this task correctly, so feel free to correct me if I misunderstood something