Elegoo Neptune 2 Printer intigration

Added files for Neptune 2

resources/definitions/elegoo_neptune_2.def.json

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+{
+    "name": "Neptune 2",
+    "version": 2,
+    "inherits": "fdmprinter",
+    "metadata": {
+        "visible": true,
+        "author": "Toylerrr",
+        "category": "Elegoo",
+        "manufacturer": "Elegoo",
+        "platform": "elegoo_neptune_2.stl",
+        "platform_offset": [0,-2,0],
+        "file_formats": "text/x-gcode",
+        "machine_extruder_trains":
+        {
+            "0": "elgoo_neptune2_extruder_0"
+        }
+    },
+
+    "overrides": {
+        "machine_name": {"default_value": "ELEGOO Neptune 2"},
+        "machine_width": {"default_value": 235},
+        "machine_height": {"default_value": 260},
+        "machine_depth": {"default_value": 235},
+        "layer_height":{"default_value": 0.2},
+        "layer_height_0":{"default_value": 0.25},
+        "retraction_combing":{"default_value": "noskin"},
+        "optimize_wall_printing_order":{"default_value": true},
+        "travel_compensate_overlapping_walls_0_enabled":{"default_value": false},
+        "z_seam_type":{"default_value": "back"},
+        "z_seam_corner":{"default_value": "z_seam_corner_weighted"},
+        "material_initial_print_temperature":{"default_value": 200,"value": "max(-273.15, material_print_temperature)"},
+        "material_final_print_temperature":{"default_value": 200,"value": "max(-273.15, material_print_temperature)"},
+        "wall_thickness":{"default_value": 1.2},
+        "wall_line_count":{"default_value": 3},
+        "top_bottom_thickness":{"default_value": 1.2},
+        "top_thickness":{"default_value": 1.2},
+        "bottom_thickness":{"default_value": 1.2},
+        "infill_sparse_density":{"default_value": 15},
+        "machine_heated_bed": {"default_value": true},
+        "speed_print":{"default_value": 50},
+        "material_print_temperature":{"default_value": 205},
+        "default_material_bed_temperature":{"default_value": 50},
+        "material_bed_temperature":{"default_value": 50},
+        "material_standby_temperature":{"default_value": 200,"settable_per_extruder": false},
+        "speed_wall_x":{"default_value": 25,"value": "speed_wall"},
+        "speed_travel":{"default_value": 70,"value": "speed_print if magic_spiralize else 70"},
+        "speed_print_layer_0":{"default_value": 20,"value": "speed_layer_0 - 5"},
+        "retraction_enable":{"default_value": true},
+        "retraction_amount":{"default_value": 5},
+        "retraction_speed":{"default_value": 70},
+        "adhesion_type":{"default_value": "skirt"},
+        "adhesion_extruder_nr":{"default_value": "0"},
+        "switch_extruder_retraction_amount":{"default_value": 10},
+        "raft_margin":{"default_value": 5},
+        "raft_airgap":{"default_value": 0.25},
+        "brim_width":{"default_value": 5},
+        "retraction_hop_enabled":{"default_value": false},
+        "support_infill_rate":{"default_value": 15},
+        "machine_gcode_flavor": {"default_value": "RepRap (Marlin/Sprinter)"},
+        "machine_start_gcode": {"default_value": "G28 ;home\nG92 E0 ;Reset Extruder\nG1 Z4.0 F3000 ;Move Z Axis up\nG92 E0 ;Reset Extruder\nG1 X1.1 Y20 Z0.28 F5000.0 ;Move to start position\nG1 X1.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line\nG1 X1.4 Y200.0 Z0.28 F5000.0 ;Move to side a little\nG1 X1.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line\nG92 E0 ;Reset Extruder\nG1 Z2.0 F3000 ;Move Z Axis up"},
+        "machine_end_gcode": {"default_value": "G91 ;Relative positionning\nG1 E-2 F2700 ;Retract a bit\nG1 E-2 Z0.2 F1600 ;Retract and raise Z\nG1 X5 Y5 F3000 ;Wipe out\nG1 Z10 ;Raise Z more\nG90 ;Absolute positionning\nG1 X0 Y{machine_depth} ;Present print\nM106 S0 ;Turn-off fan\nM104 S0 ;Turn-off hotend\nM140 S0 ;Turn-off bed\nM84 X Y E ;Disable all steppers but Z"}
+    }
+}

resources/extruders/elgoo_neptune2_extruder_0.def.json

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+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "elegoo_neptune_2",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}