Add support for adding essence modifiers to items (PathOfBuildingCommunity#1239)

* Export Misc data for 0.3.0

* Temp save spec changes

* Mod export

* Begin work on exporting new essence mods

* Update essence spec, fix league name

* Restore weight keys

* Support crafting essence mods

Author: Wires77

src/Classes/ItemsTab.lua

@@ -1804,7 +1804,7 @@ function ItemsTabClass:AddModComparisonTooltip(tooltip, mod)
 	local newItem = new("Item", self.displayItem:BuildRaw())
 
 	for _, subMod in ipairs(mod) do
-		t_insert(newItem.explicitModLines, { line = checkLineForAllocates(subMod, self.build.spec.nodes), modTags = mod.modTags, [mod.type] = true })
+		t_insert(newItem.explicitModLines, { line = checkLineForAllocates(subMod, self.build.spec.nodes), modTags = mod.modTags, [mod.type or "Suffix"] = true })
 	end
 
 	newItem:BuildAndParseRaw()
@@ -2511,12 +2511,35 @@ function ItemsTabClass:AddCustomModifierToDisplayItem()
 				end
 				return modA.level > modB.level
 			end)
+		elseif sourceId == "ESSENCE" then
+			for _, essence in pairs(self.build.data.essences) do
+				local modId = essence.mods[self.displayItem.type]
+				if modId then
+					local mod = self.displayItem.affixes[modId] or data.itemMods.Exclusive[modId]
+					t_insert(modList, {
+						label = essence.name .. "   " .. "^8[" .. table.concat(mod, "/") .. "]" .. " (" .. (mod.type or "Suffix") .. ")",
+						mod = mod,
+						type = "custom",
+						essence = essence,
+					})
+				end
+			end
+			table.sort(modList, function(a, b)
+				if a.essence.type ~= b.essence.type then
+					return a.essence.type > b.essence.type
+				else
+					return a.essence.tierLevel > b.essence.tierLevel
+				end
+			end)
 		end
 	end
 	if not self.displayItem.crafted then
 		t_insert(sourceList, { label = "Prefix", sourceId = "PREFIX" })
 		t_insert(sourceList, { label = "Suffix", sourceId = "SUFFIX" })
 	end
+	if self.displayItem.type ~= "Jewel" and self.displayItem.type ~= "Flask" then
+		t_insert(sourceList, { label = "Essence", sourceId = "ESSENCE" })
+	end
 	t_insert(sourceList, { label = "Custom", sourceId = "CUSTOM" })
 	buildMods(sourceList[1].sourceId)
 	local function addModifier()