Add support for Cubicon xCeler-Plus printer and profiles. (#11771)

# Description
This PR adds support for the new printer model **Cubicon xCeler-Plus**.
It includes:
- Machine configuration (JSON)
- Process profiles (Speed, Quality settings)
- Filament settings
- Bed texture and model resources

# Screenshots/Recordings/Graphs
# Tests
I have successfully tested the sliced G-code on the actual machine (Cubicon xCeler-Plus).
- [x] Slicing test passed
- [x] Printing test passed with Klipper firmware

resources/profiles/Cubicon/machine/Cubicon xCeler-I 0.4 nozzle.json

@@ -2,7 +2,7 @@
     "type": "machine",
     "name": "Cubicon xCeler-I 0.4 nozzle",
     "inherits": "fdm_machine_common",
-    "from": "User",
+    "from": "system",
     "instantiation": "true",
     "adaptive_bed_mesh_margin": "0",
     "auxiliary_fan": "1",
@@ -22,9 +22,9 @@
     "cooling_tube_length": "0",
     "cooling_tube_retraction": "0",
     "default_filament_profile": [
-        "Cubicon PLA @base"
+        "Cubicon PLA @Cubicon xCeler-I"
     ],
-    "default_print_profile": "0.08mm Extra Fine @Creality K1 (0.4 nozzle)",
+    "default_print_profile": "cubicon default @base",
     "deretraction_speed": [
         "30"
     ],