refactor database types & toDatabase() mapping

src/Column.php

src/DI/TablesExtension.php

src/Database/ArrayType.php

src/Database/BuiltInType.php

src/Database/DatabaseType.php

src/Database/Identifier.php

src/Database/NamedType.php

src/NamedIdentifier.php

src/Scaffolding/TablesDefinitions.php

src/Type.php

src/TypeResolver.php

src/Types/ArrayType.php

src/Types/BinaryType.php

src/Types/BooleanType.php

src/Types/CompositeType.php

src/Types/DateType.php

src/Types/DecimalType.php

src/Types/EnumType.php

src/Types/InstantType.php

src/Types/IntType.php