Warn instead of loading when ClassicAPI is missing

The addon needs the ClassicAPI DLL - without it the inline |T markup the
emotes are built from renders as literal text, title included. Move the
real load order into TwitchEmotes_ClassicAPI.toc, which the DLL picks up
in preference, and leave the base TOC loading nothing but CAPI_Warning.lua:
a popup and a chat line pointing at the latest release, with the download
URL in a preselected edit box. Its title drops the inline-texture markup
for the same reason.

Also list CreateFrame among the globals in .luarc.json.

CAPI_Warning.lua

@@ -0,0 +1,38 @@
+local CLASSIC_API_WEBSITE = "https://github.com/brues-code/ClassicAPI"
+local CLASSIC_API_LATEST_URL = CLASSIC_API_WEBSITE .. "/releases/latest"
+
+local headline = "TwitchEmotes has been disabled."
+local detail = "The ClassicAPI DLL isn't loaded. Download the latest release from: "
+
+local function ShowRequiredPopup()
+    StaticPopupDialogs["TWITCH_CLASSICAPI_REQUIRED"] = {
+    text = headline .. "\n\n" .. detail,
+    button1 = OKAY,
+    hasEditBox = 1,
+    editBoxWidth = 280,
+    timeout = 0,
+    whileDead = 1,
+    hideOnEscape = 1,
+    preferredIndex = 3,
+    OnShow = function()
+        local editBox = getglobal(this:GetName().."EditBox")
+        if editBox then
+        editBox:SetText(CLASSIC_API_LATEST_URL)
+        editBox:HighlightText()
+        editBox:SetFocus()
+        end
+    end,
+    }
+    StaticPopup_Show("TWITCH_CLASSICAPI_REQUIRED")
+    DEFAULT_CHAT_FRAME:AddMessage(
+        headline .. " " .. detail .. CLASSIC_API_LATEST_URL,
+        1, 0.3, 0.3
+    )
+end
+
+local loginFrame = CreateFrame("Frame")
+loginFrame:RegisterEvent("PLAYER_ENTERING_WORLD")
+loginFrame:SetScript("OnEvent", function()
+    loginFrame:UnregisterEvent("PLAYER_ENTERING_WORLD")
+    ShowRequiredPopup()
+end)