[Fix] Fix the issue with parsing MongoDB timestamp and array types

[xuqinghuang]

Proposed changes

Issue Number: close #546

Problem Summary:

1. Change the mongo timestamp type to the datetime type when writing to doris
2. Fix the problem that the mongo array type is incorrectly judged, and set it to the array type，to avoid creating table exceptions
3. Unify $date, $numberDecimal, $numberLong constants to avoid separate definitions

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

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