feat: Enhance JSON configuration writer and add heartbeat recording to crash recovery service

- Updated JsonConfigWriterService to structure the JSON output with new sections for scripts, window settings, input bindings, paths, rendering, and GUI configurations.
- Introduced a new method in ICrashRecoveryService to record frame heartbeats, allowing for better tracking of long-running operations.
- Refactored existing code to improve readability and maintainability, including the addition of helper functions for adding string members to JSON objects.

scripts/test_scene_framework.lua

@@ -214,10 +214,14 @@ assert_equal(time_value, 42, "dynamic compute function receives time")
 print("Testing material registry...")
 
 local test_config = {
-    materialx_materials = {
-        {shader_key = "floor", document = "floor.mtlx", material = "Floor"},
-        {shader_key = "wall", document = "wall.mtlx", material = "Wall"},
-        {shader_key = "ceiling", document = "ceiling.mtlx", material = "Ceiling"},
+    rendering = {
+        materialx = {
+            materials = {
+                {shader_key = "floor", document = "floor.mtlx", material = "Floor"},
+                {shader_key = "wall", document = "wall.mtlx", material = "Wall"},
+                {shader_key = "ceiling", document = "ceiling.mtlx", material = "Ceiling"},
+            }
+        }
     }
 }