Build: Add caffeine caching library

CityDoctorParent/CityDoctorModel/pom.xml

@@ -76,7 +76,10 @@
 			<groupId>org.orbisgis</groupId>
 			<artifactId>h2gis</artifactId>
 		</dependency>
-
+		<dependency>
+			<groupId>com.github.ben-manes.caffeine</groupId>
+			<artifactId>caffeine</artifactId>
+		</dependency>
 	</dependencies>
 	<build>
 		<resources>

CityDoctorParent/pom.xml

@@ -247,6 +247,11 @@
                 <artifactId>h2gis</artifactId>
                 <version>2.2.3</version>
             </dependency>
+            <dependency>
+                <groupId>com.github.ben-manes.caffeine</groupId>
+                <artifactId>caffeine</artifactId>
+                <version>3.2.2</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
     <dependencies>