convert date/datev2 to sql date and largeint into decimal(38,0)

[gnehil]

Proposed changes

Issue Number: close #xxx

Problem Summary:

• read largeint type as decimal(38,0)
• read date/datev2 type as java.sql.date

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
5. Are there any changes that cannot be rolled back: (Yes/No)

Further comments

If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

[JNSimba]

LGTM