Update mbtiles pom.xml name and description
Update MBTiles pom.xml name to follow other GeoTools modules
Allow the user to call MBTilesFiles.init() twice by adding IF NOT EXISTS to CREATE TABLE statements
Improve MBTiles interoperability with GDAL and QGIS by adding support for minzoom and maxzoom metadata items
Automatically update the min max zoom metadata items when adding tiles