fix(Rest): new endpoint will help to get the package details by projectId.

Signed-off-by: Nikesh kumar <kumar.nikesh@siemens.com>

Author: nikkuma7

rest/resource-server/src/main/java/org/eclipse/sw360/rest/resourceserver/project/ProjectController.java

@@ -466,6 +466,25 @@ public ResponseEntity<EntityModel<Project>> getProject(
         return new ResponseEntity<>(userHalResource, HttpStatus.OK);
     }
 
+    @Operation(
+            description = "Get a package with project id.",
+            tags = {"Projects"}
+    )
+    @RequestMapping(value = PROJECTS_URL + "/{id}/packages", method = RequestMethod.GET)
+    public ResponseEntity<List<HalResource<Project>>> getPackagesByProjectId(
+            @Parameter(description = "Project ID", example = "376576")
+            @PathVariable("id") String id) throws TException {
+
+        User sw360User = restControllerHelper.getSw360UserFromAuthentication();
+        Project sw360Project = projectService.getProjectForUserById(id, sw360User);
+        HalResource<Project> halProject = createHalProject(sw360Project, sw360User);
+
+        if (sw360Project.getPackageIdsSize() > 0) {
+            restControllerHelper.addEmbeddedPackages(halProject, sw360Project.getPackageIds(), packageService);
+        }
+        return new ResponseEntity(halProject, HttpStatus.OK);
+    }
+
     @Operation(
             description = "Get linked projects of a single project.",
             tags = {"Projects"}

rest/resource-server/src/test/java/org/eclipse/sw360/rest/resourceserver/restdocs/ProjectSpecTest.java

@@ -275,6 +275,7 @@ public void before() throws TException, IOException {
         project.setSpecialRisks3rdParty("Lorem Ipsum");
         project.setLicenseInfoHeaderText("Lorem Ipsum");
         project.setDeliveryChannels("Lorem Ipsum");
+        project.setPackageIds(new HashSet<>(Arrays.asList("pkg-001", "pkg-002", "pkg-003")));
         project.setVendor(new Vendor());
         project.setRemarksAdditionalRequirements("Lorem Ipsum");
         ReleaseClearingStateSummary clearingCount = new ReleaseClearingStateSummary();