Update @sap/cds-dk to 9.4.1 (#1)

- Removes generated files from git tree
- Automates cds export as part of Java build

Author: beckermarc

apis/data-service/.gitignore

@@ -1,3 +1,3 @@
-# _i18n/
-# data/
-# services.cds
+_i18n/
+data/
+services.cds

apis/data-service/pom.xml

@@ -58,7 +58,7 @@
 						</configuration>
 					</execution>
 
-					<!-- <execution>
+					<execution>
 						<id>cds.export</id>
 						<goals>
 							<goal>cds</goal>
@@ -68,7 +68,7 @@
 								<command>export srv/data-service.cds -4 mvn -a cdl -2 ./apis/data-service/src/main/resources/cds/capire/xflights-data</command>
 							</commands>
 						</configuration>
-					</execution> -->
+					</execution>
 				</executions>
 			</plugin>
 		</plugins>