feat: add Orcaslicer and docker

backend/profiles/bambu_a1.ini

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+# base config for Bambu Lab A1 style printer (approximate for estimation)
+# Save as config.ini
+
+# MACHINE SETTINGS
+bed_shape = 0x0,256x0,256x256,0x256
+nozzle_diameter = 0.4
+filament_diameter = 1.75
+max_print_speed = 500
+travel_speed = 500
+gcode_flavor = klipper
+# Bambu uses specific gcode but klipper/marlin is close enough for time est if accel matches
+machine_max_acceleration_x = 10000
+machine_max_acceleration_y = 10000
+machine_max_acceleration_e = 5000
+machine_max_acceleration_extruding = 5000
+
+# PRINT SETTINGS
+layer_height = 0.2
+first_layer_height = 0.2
+perimeters = 2
+fill_density = 15%
+fill_pattern = grid
+solid_layers = 3
+top_solid_layers = 3
+bottom_solid_layers = 3
+
+# SPEED SETTINGS (Conservative defaults for A1)
+perimeter_speed = 200
+external_perimeter_speed = 150
+infill_speed = 250
+solid_infill_speed = 200
+top_solid_infill_speed = 150
+support_material_speed = 150
+bridge_speed = 50
+gap_fill_speed = 50
+
+# FILAMENT SETTINGS
+filament_density = 1.24
+filament_cost = 25.0
+filament_max_volumetric_speed = 15
+temperature = 220
+bed_temperature = 60