[feature] add missing OxygenXML libs to fix

`Check datasource configuration. Could not instantiate: ro.sync.db.nxd.exist.ExistSession due to: java.lang.NoClassDefFoundError: xyz/elemental/mediatype/MediaType`

Author: marmoure

exist-core/src/main/java/org/exist/webstart/JnlpJarFiles.java

@@ -83,6 +83,8 @@ public class JnlpJarFiles {
             "commons-io-%latest%",
             "commons-logging-%latest%",
             "commons-pool-%latest%",
+            "elemental-media-type-api-%latest%",
+            "elemental-media-type-impl-%latest%",
             "jargo-%latest%",
             "bcprov-jdk18on-%latest%",
             "fastutil-%latest%-min",