Include the crossVersion in daffodil jars packaged in tar/zip/RPM

The sbt-native-packager plugin does not include the crossVersion in the
Daffodil jars that it packages in tar/zip/RPM/etc. This could be useful
for more easily comparing jars from maven (which do include the
crossVersion) or creating a local Ivy/maven repo.

The plugin does not have an configuration option to set this, so this
directly modifies the mappings that the plugin creates to include the
crossVersion for Daffodil jars only.

For example, a package mapping that was previously this:

  lib/org.apache.daffodil.daffodil-lib-3.7.0.jar

is now changed to this:

  lib/org.apache.daffodil.daffodil-lib_2.12-3.7.0.jar

DAFFODIL-2849

daffodil-cli/build.sbt

@@ -36,6 +36,22 @@ Universal / mappings ++= Seq(
   baseDirectory.value / "README.md" -> "README.md",
 )
 
+// When the sbt-native-packger plugin creates a tar/zip/RPM/etc, it does not include the
+// crossVersion in mapping of jars built from this project (i.e. org.apache.daffodil jars only).
+// There are cases where this crossVersion would be useful (e.g. consistency with Ivy jar names
+// that do include the crossVersion), so this modifies the mapping to include that. Note that
+// the name of the path already has what we need, we just need to prepend "lib/" and our
+// organization.
+Universal / mappings := (Universal / mappings).value.map { case (path, mapping) =>
+  val thisProjectJarPrefix = "lib/" + organization.value + "."
+  val newMapping =
+    if (mapping.startsWith(thisProjectJarPrefix))
+      thisProjectJarPrefix + path.getName
+    else
+      mapping
+  (path, newMapping)
+}
+
 maintainer := "Apache Daffodil <[email protected]>"
 
 //