Add emoter and ehcoer

Modules/Echoer.lua

@@ -0,0 +1,36 @@
+local addonname, shared = ...
+---@cast shared HeimdallShared
+---@cast addonname string
+
+---@diagnostic disable-next-line: missing-fields
+shared.Echoer = {}
+function shared.Echoer.Init()
+	local frame = CreateFrame("Frame")
+	frame:RegisterEvent("CHAT_MSG_CHANNEL")
+	frame:SetScript("OnEvent", function(self, event, msg, sender, ...)
+		if not Heimdall_Data.config.echoer.enabled then return end
+
+		local channelId = select(6, ...)
+		local channelname = ""
+		---@type any[]
+		local channels = { GetChannelList() }
+		for i = 1, #channels, 2 do
+			---@type number
+			local id = channels[i]
+			---@type string
+			local name = channels[i + 1]
+			if id == channelId then
+				channelname = name
+			end
+		end
+
+		if channelname ~= Heimdall_Data.config.echoer.masterChannel then return end
+
+		if string.find(msg, "^" .. Heimdall_Data.config.echoer.prefix) then
+			local msg = string.sub(msg, string.len(Heimdall_Data.config.echoer.prefix) + 1)
+			SendChatMessage(msg, "SAY")
+		end
+	end)
+
+	print("Heimdall - Echoer loaded")
+end