support read_csv table function

[Fedomn]

refer to https://duckdb.org/docs/data/csv.html

currently, supported function arguments:

• header: indicate the file contains a header line, if FALSE, the columns will be named column_1, column_2, column_3, ... which inferred by arrow csv reader
• delim: Specifies the string that separates columns within each row (line) of the file. The default value is a comma (,).

SELECT * FROM read_csv('test.csv', delim=>'|', header=>True);