Expanded sections table with new columns:

Expanded sections table with new columns:

- Lot id              : Referencing lot (as one lot may have n sections)
- Type                : Section type (residential, commercial, road, etc.)
- Sub type            : Sub section type (hut, house, skyscraper, etc.)
- Neighbour left id   : Connected section id to left
- Neighbour right id  : Connected section id to right
- Neighbour bottom id : Connected section id to bottom (horizontal)
- Neighbour top id    : Connected section id to top (horizontal)
- Neighbour up id     : Connected section id to upward
- Neighbour down id   : Connected section id to downward

Signed-off-by: Roland Haeder <roland@mxchange.org>