JCS: update package to org.apache.commons.jcs3

[simon04]

For the upcoming release of JCS 3, the artifact ID as well as the Java packages have been renamed s/jcs/jcs3/, see the following upstream commits:

​https://github.com/apache/commons-jcs/commit/3c518b8d03435701f3211be5b38df373d9424e0b
​https://github.com/apache/commons-jcs/commit/356da531c5ccfd7cb32eea1be67c61ef17ef80cc

-  <artifactId>commons-jcs-core</artifactId>
+  <artifactId>commons-jcs3-core</artifactId>

- package org.apache.commons.jcs;
+ package org.apache.commons.jcs3;

---

Also, various plugins need to be updated:

josm/plugins$ rg -l org.apache.commons.jcs | sort

conflation/src/org/openstreetmap/josm/plugins/conflation/config/parser/InstanceConstructor.java
imagery_cachexport/src/org/openstreetmap/josm/plugins/imagery_cachexport/AbstractImageryCacheExportAction.java
imagery_cachexport/src/org/openstreetmap/josm/plugins/imagery_cachexport/ImageryTileExportDialog.java
imagery_cachexport/src/org/openstreetmap/josm/plugins/imagery_cachexport/TMSImageryCacheExportAction.java
imagery_cachexport/src/org/openstreetmap/josm/plugins/imagery_cachexport/WMSImageryCacheExportAction.java
imagery_cachexport/src/org/openstreetmap/josm/plugins/imagery_cachexport/WMTSImageryCacheExportAction.java
Mapillary/src/main/java/org/openstreetmap/josm/plugins/mapillary/cache/Caches.java
Mapillary/src/main/java/org/openstreetmap/josm/plugins/mapillary/MapillaryData.java
MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/cache/Caches.java
MicrosoftStreetside/src/org/openstreetmap/josm/plugins/streetside/StreetsideData.java
wikipedia/src/main/java/org/wikipedia/api/ApiQueryClient.java
wikipedia/src/main/java/org/wikipedia/Caches.java