Added a comment for @SuppressFBWarnings("DM_EXIT") (#623)

* Added a comment for @SuppressFBWarnings("DM_EXIT")

* Updated comment for usage of @SuppressFBWarnings("DM_EXIT")

plugin-management-cli/src/main/java/io/jenkins/tools/pluginmanager/cli/Main.java

@@ -13,6 +13,14 @@
 
 public class Main {
     @SuppressFBWarnings("DM_EXIT")
+/*
+    The @SuppressFBWarnings("DM_EXIT") annotation is added here to suppress FindBugs warnings concerning the direct use of System.exit().The value
+    "DM_EXIT" corresponds to the specific FindBugs detector for direct exit methods, indicating that this suppression is targeted at that particular
+    category of warnings. The justification for this suppression is that the usage of System.exit() in this code is intentional and serves a specific
+    purpose. Placing the justification and value directly in the annotation adheres to the common approach with SuppressFBWarnings, providing explicit
+    documentation about the deliberate decision to use System.exit() in the code.
+ */
+
     public static void main(String[] args) throws IOException {
         CliOptions options = new CliOptions();
         ParserProperties parserProperties = ParserProperties.defaults().withUsageWidth(150);