chore: minor UI text updates

Author: quintesse

src/main/java/org/codejive/jpm/Main.java

@@ -195,10 +195,10 @@ void addSelectArtifactAction(PromptBuilder promptBuilder) throws IOException {
                     .name("action")
                     .message("What to do:")
                     .newItem("install")
-                    .text("Install artifact")
+                    .text("Download & Install artifact")
                     .add()
                     .newItem("copy")
-                    .text("Copy artifact")
+                    .text("Download & Copy artifact")
                     .add()
                     .newItem("version")
                     .text("Select different version")