X2D Support (#13388)

# Description

Adresses #13294 

- Adds the X2D printer definition, machine presets, process presets,
filament presets, BBL profile index entries, CLI config entries,
filament blacklist updates, and printer/load/calibration/cover assets.
- Updates dual-nozzle handling to use configured toolhead labels and
match Bambu X2D hotend placeholders.
- Adds X2D-specific wipe tower cooling placeholder support and 3MF
filament/nozzle change sequence metadata import/export plumbing.

# Note

I own a P2S and an X2D. That's all. I frankly have no idea if my changes
cause regression on other printers, and have no capability to test. I
know that for my X2D, which runs an AMS, .2mm nozzles, SuperTack, and in
LAN mode, this has been working without issue.

# Screenshots/Recordings/Graphs

<img width="606" height="380" alt="Dual nozzle control"
src="https://github.com/user-attachments/assets/0d1c1063-4621-4097-b97c-d739557bf18c"
/>

*Dual nozzle control*

<img width="726" height="260" alt="image"
src="https://github.com/user-attachments/assets/270355b7-ca67-4ca3-ad19-582b8f11411b"
/>

*Multi nozzle filament override*

<img width="416" height="202" alt="X2D Machine config and dual nozzle
support"
src="https://github.com/user-attachments/assets/6a5c07b2-0d20-4819-8f42-d60731313249"
/>

*X2D Machine config and dual nozzle support*

<img width="397" height="142" alt="Filament for Supports test prints"
src="https://github.com/user-attachments/assets/3c7546bd-0e27-4d56-89b7-d9ca18c976f9"
/>

*Filament for Supports has been used in over 20 hours of test prints*

<img width="210" height="263" alt="Left vs Right filament distinction"
src="https://github.com/user-attachments/assets/03322268-b669-4f14-8d77-c4d96843d219"
/>

*Left vs Right filament distinction*

<img width="557" height="327" alt="Custom filament mapping"
src="https://github.com/user-attachments/assets/c1c4396f-7359-474e-80bd-78fec22f9c82"
/>

*Custom filament mapping*

<img width="556" height="314" alt="Auto map"
src="https://github.com/user-attachments/assets/d83e3217-edce-4340-886e-043962003a30"
/>

*Auto map*

<img width="689" height="664" alt="LAN mode send print with X2D preview
and no errors"
src="https://github.com/user-attachments/assets/76009bbf-31d3-4a6c-979c-8643b487c824"
/>

*LAN mode send print with X2D preview and no errors, dual nozzle
selection*


## Tests

- 20 hours of dual-nozzle printing.
- 100% CTest tests passed
- Validated 208 changed JSON files.

<!--
> A guide for users on how to download the artifacts from this PR.
-->

[How to Download Pull Requests Artifacts for
Testing](https://www.orcaslicer.com/wiki/how_to_download_pr_artifacts)
Fix #13294

src/libslic3r/Preset.cpp

@@ -1281,7 +1281,7 @@ static std::vector<std::string> s_Preset_filament_options {/*"filament_colour",
     // "bed_type",
     //BBS:temperature_vitrification
     "temperature_vitrification", "reduce_fan_stop_start_freq","dont_slow_down_outer_wall", "slow_down_for_layer_cooling", "fan_min_speed",
-    "fan_max_speed", "enable_overhang_bridge_fan", "overhang_fan_speed", "overhang_fan_threshold", "close_fan_the_first_x_layers", "full_fan_speed_layer", "fan_cooling_layer_time", "slow_down_layer_time", "slow_down_min_speed",
+    "fan_max_speed", "enable_overhang_bridge_fan", "overhang_fan_speed", "overhang_fan_threshold", "close_fan_the_first_x_layers", "close_additional_fan_first_x_layers", "first_x_layer_fan_speed", "full_fan_speed_layer", "additional_fan_full_speed_layer", "fan_cooling_layer_time", "slow_down_layer_time", "slow_down_min_speed",
     "filament_start_gcode", "filament_end_gcode", "filament_change_extrusion_role_gcode",
     //exhaust fan control
     "activate_air_filtration","activate_air_filtration_during_print","activate_air_filtration_on_completion","during_print_exhaust_fan_speed","complete_print_exhaust_fan_speed",
@@ -1305,7 +1305,7 @@ static std::vector<std::string> s_Preset_filament_options {/*"filament_colour",
     "filament_multitool_ramming", "filament_multitool_ramming_volume", "filament_multitool_ramming_flow", "activate_chamber_temp_control",
     "filament_long_retractions_when_cut","filament_retraction_distances_when_cut", "idle_temperature",
     //BBS filament change length while the extruder color
-    "filament_change_length","filament_flush_volumetric_speed","filament_flush_temp",
+    "filament_change_length","filament_flush_volumetric_speed","filament_flush_temp", "filament_cooling_before_tower",
     "long_retractions_when_ec", "retraction_distances_when_ec"
     };