Add new 5.1 default theme Lambda

I'd like to thank everyone who made this possible;, including but not
limited to Riakodoadm, MrThatKid, kyzentun, Luizsan, JoseVarelaP,
everyone else who provided feedback and bug reports.

Themes/default/Graphics/NoteColumn layers.lua

@@ -0,0 +1,43 @@
+local offset= 52
+local hns_states= {
+	HoldNoteScore_Held= 0,
+	HoldNoteScore_LetGo= 1,
+	HoldNoteScore_MissedHold= 1,
+}
+
+return {
+	Def.Sprite{
+		Texture= THEME:GetPathG("HoldJudgment", "label"),
+		InitCommand= function(self)
+			self:draworder(notefield_draw_order.under_field)
+				:y(offset):animate(false):diffusealpha(0)
+		end,
+		WidthSetCommand= function(self, param)
+			scale_to_fit(self, param.width, param.width)
+			param.column:set_layer_transform_type(self, "FieldLayerTransformType_PosOnly")
+			:set_layer_fade_type(self, "FieldLayerFadeType_Explosion")
+		end,
+		PlayerStateSetCommand= function(self, param)
+			if player_config:get_data(param.PlayerNumber).JudgmentUnderField then
+				self:draworder(notefield_draw_order.under_field)
+			else
+				self:draworder(notefield_draw_order.over_field)
+			end
+		end,
+		ColumnJudgmentCommand= function(self, param)
+			local hns= param.hold_note_score
+			if hns_states[hns] then
+				self:stoptweening()
+					:setstate(hns_states[hns])
+					:linear(.1):diffusealpha(1)
+					:sleep(.5)
+					:linear(.2):diffusealpha(0)
+			elseif hns then
+				lua.ReportScriptError("No sprite state for hns " .. tostring(hns))
+			end
+		end,
+		ReverseChangedCommand= function(self, param)
+			self:y(offset * param.sign)
+		end,
+	},
+}