feat(jdtls): add PomPath to metadata

Author: FluoriteCafe-work

jdtls.ext/com.microsoft.jdtls.ext.core/src/com/microsoft/jdtls/ext/core/model/PackageNode.java

@@ -88,6 +88,8 @@ public class PackageNode {
 
     private static final String MAX_SOURCE_VERSION = "MaxSourceVersion";
 
+    private static final String POM_PATH = "PomPath";
+
     /**
      * The name of the PackageNode.
      */
@@ -181,6 +183,10 @@ public static PackageNode createNodeForProject(IJavaElement javaElement) {
             int jdkLevel = (int) (CompilerOptions.versionToJdkLevel(sourceVersion, true) >>> 16);
             int majorVersion = Math.max(0, jdkLevel - ClassFileConstants.MAJOR_VERSION_0);
             projectNode.setMetaDataValue(MAX_SOURCE_VERSION, majorVersion);
+            IFile existingPom = proj.getFile("pom.xml");
+            if (existingPom.exists()) {
+                projectNode.setMetaDataValue(POM_PATH, existingPom.getLocation().toOSString());
+            }
         } catch (CoreException e) {
             // do nothing
         }