Add all Viewport.debug_draw enum options to dropdown

[stoofin]

I noticed more values were in the tooltip than the dropdown menu in the inspector. The names are taken from

godot/editor/plugins/node_3d_editor_plugin.cpp

Lines 5111 to 5151 in 2e7fc81

	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_normal", TTR("Display Normal")), VIEW_DISPLAY_NORMAL);
	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_wireframe", TTR("Display Wireframe")), VIEW_DISPLAY_WIREFRAME);
	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_overdraw", TTR("Display Overdraw")), VIEW_DISPLAY_OVERDRAW);
	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_lighting", TTR("Display Lighting")), VIEW_DISPLAY_LIGHTING);
	view_menu->get_popup()->add_radio_check_shortcut(ED_SHORTCUT("spatial_editor/view_display_unshaded", TTR("Display Unshaded")), VIEW_DISPLAY_UNSHADED);
	view_menu->get_popup()->set_item_checked(view_menu->get_popup()->get_item_index(VIEW_DISPLAY_NORMAL), true);
	display_submenu = memnew(PopupMenu);
	display_submenu->set_hide_on_checkable_item_selection(false);
	display_submenu->add_radio_check_item(TTR("Directional Shadow Splits"), VIEW_DISPLAY_DEBUG_PSSM_SPLITS);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("Normal Buffer"), VIEW_DISPLAY_NORMAL_BUFFER);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("Shadow Atlas"), VIEW_DISPLAY_DEBUG_SHADOW_ATLAS);
	display_submenu->add_radio_check_item(TTR("Directional Shadow Map"), VIEW_DISPLAY_DEBUG_DIRECTIONAL_SHADOW_ATLAS);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("Decal Atlas"), VIEW_DISPLAY_DEBUG_DECAL_ATLAS);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("VoxelGI Lighting"), VIEW_DISPLAY_DEBUG_VOXEL_GI_LIGHTING);
	display_submenu->add_radio_check_item(TTR("VoxelGI Albedo"), VIEW_DISPLAY_DEBUG_VOXEL_GI_ALBEDO);
	display_submenu->add_radio_check_item(TTR("VoxelGI Emission"), VIEW_DISPLAY_DEBUG_VOXEL_GI_EMISSION);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("SDFGI Cascades"), VIEW_DISPLAY_DEBUG_SDFGI);
	display_submenu->add_radio_check_item(TTR("SDFGI Probes"), VIEW_DISPLAY_DEBUG_SDFGI_PROBES);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("Scene Luminance"), VIEW_DISPLAY_DEBUG_SCENE_LUMINANCE);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("SSAO"), VIEW_DISPLAY_DEBUG_SSAO);
	display_submenu->add_radio_check_item(TTR("SSIL"), VIEW_DISPLAY_DEBUG_SSIL);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("VoxelGI/SDFGI Buffer"), VIEW_DISPLAY_DEBUG_GI_BUFFER);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("Disable Mesh LOD"), VIEW_DISPLAY_DEBUG_DISABLE_LOD);
	display_submenu->add_separator();
	display_submenu->add_radio_check_item(TTR("OmniLight3D Cluster"), VIEW_DISPLAY_DEBUG_CLUSTER_OMNI_LIGHTS);
	display_submenu->add_radio_check_item(TTR("SpotLight3D Cluster"), VIEW_DISPLAY_DEBUG_CLUSTER_SPOT_LIGHTS);
	display_submenu->add_radio_check_item(TTR("Decal Cluster"), VIEW_DISPLAY_DEBUG_CLUSTER_DECALS);
	display_submenu->add_radio_check_item(TTR("ReflectionProbe Cluster"), VIEW_DISPLAY_DEBUG_CLUSTER_REFLECTION_PROBES);
	display_submenu->add_radio_check_item(TTR("Occlusion Culling Buffer"), VIEW_DISPLAY_DEBUG_OCCLUDERS);
	display_submenu->add_radio_check_item(TTR("Motion Vectors"), VIEW_DISPLAY_MOTION_VECTORS);
	display_submenu->add_radio_check_item(TTR("Internal Buffer"), VIEW_DISPLAY_INTERNAL_BUFFER);

[Calinou]

While testing this, I noticed #88772 but it's not a blocker for this PR (since all draw modes work correctly when running a project from the editor, or in debug export templates).

[akien-mga]

Thanks!