chore: move addon into Chatter/ + add standard .gitignore

Matches the Exiles fork-layout convention (each addon in its own folder).

Chatter/Modules/EditBoxHistory.lua

@@ -0,0 +1,41 @@
+local mod = Chatter:NewModule("Editbox History", "AceHook-3.0" )
+local L = LibStub("AceLocale-3.0"):GetLocale("Chatter")
+mod.modName = L["Edit Box History"]
+
+local history, enabled
+local defaults = { realm = { history = { } } }
+local editbox = DEFAULT_CHAT_FRAME.editBox
+
+function mod:OnInitialize()
+	self.db = Chatter.db:RegisterNamespace("Editbox History", defaults)
+	history = self.db.realm.history
+
+	-- Hook adding lines
+	self:SecureHook( editbox, "AddHistoryLine" )
+end
+
+function mod:OnEnable()
+	-- Keeping state if we're enabled or not
+	enable = false
+	for _, line in ipairs( history ) do
+		editbox:AddHistoryLine( line )
+	end
+	enabled = true
+end
+
+function mod:AddHistoryLine( object, line )
+	-- While in 'OnEnable' this code just returns
+	if not self:IsEnabled() or not enabled then return end
+
+	local history = history
+	tinsert( history, line )
+
+	-- clear out the excess values
+	for i=1, #history - object:GetHistoryLines() do
+		tremove( history, 1 )
+	end
+end
+
+function mod:Info()
+	return L["Remembers the history of the editbox across sessions."]
+end