text: Title: Support arrays of timestamp / timestamptz / date / time in SQLite
  Body: We don't currently support things like this in SQLite:
  
  ```python
  class MyTable(Table):
      times = Array(Time())
  ```
  
  SQLite doesn't have native support for array columns. The way we support it in Piccolo is by serialising the array into a string before storing it in the database, and deserialising it again when querying the row.
  
  We use JSON to do the serialisation / deserialisation, which doesn't support `datetime` / `date` / `time` out of the box.
  
  To support this, we'll need to create new row types for SQLite - like `ARRAY_TIME` / `ARRAY_TIMESTAMP` etc. When we read data from a row with this column type, we know we need to deserialise the values back into a list of Python objects.
  
  One of the reasons we need this functionality is because we're doing a lot of improvements to arrays in Piccolo Admin, and we often test on SQLite.