[featrue] Add data type converting support for dataMap
[featrue] Add data type converting support for dataMap

Syntax for column:
name (alias) [String|Int|Number|Bool]
'account.user_id (uid) [Int]'
'account.user_id [Int]'
'account.verified [Bool]'

catfan/Medoo,guoxiaod/Medoo,tvitcom/Medoo