Derby dialect support

**Blocked by:**
https://github.com/devastool/entity2jooq/issues/27

**Description:**
1) Need to create `DerbyTypeMapper` class, that extends from `DialectTypeMapper`, dialect name should be `Derby`;
Example:
```java
public class DerbyTypeMapper extends DialectTypeMapper {
public DerbyTypeMapper() {
super("Derby", Set.of(...))
}
}
```
2) Need to add new dialect to `RouteTypeMapper` constructor.
Example:
```java
public RouteTypeMapper() {
DerbyTypeMapper derbyMapper = new DerbyTypeMapper();
dialects.put(derbyMapper.getDialect(), derbyMapper);
}
```