LÖVE backend + build target (compat/luajit.lua shims, Roblox build unchanged), examples/example_love, examples/example_shared (same app on Roblox and LÖVE), LuaJIT checksum tests

examples/example_shared/roblox.client.luau

@@ -0,0 +1,21 @@
+-- Roblox launcher for app.lua (sync with examples/example_shared/default.project.json).
+local ReplicatedStorage = game:GetService("ReplicatedStorage")
+local RunService = game:GetService("RunService")
+local G = require(ReplicatedStorage:WaitForChild("ImGui"))
+local ImGui = G.ImGui
+
+ImGui.CreateContext()
+local io = ImGui.GetIO()
+io.ConfigFlags = bit32.bor(io.ConfigFlags, G.ImGuiConfigFlags.NavEnableKeyboard, G.ImGuiConfigFlags.DockingEnable)
+G.ImGui_ImplRoblox.Init()
+
+local App = require(ReplicatedStorage:WaitForChild("SharedApp"))(G)
+App.Platform = "Roblox"
+
+RunService.Stepped:Connect(function()
+    G.ImGui_ImplRoblox.NewFrame()
+    ImGui.NewFrame()
+    App.Frame()
+    ImGui.Render()
+    G.ImGui_ImplRoblox.RenderDrawData(ImGui.GetDrawData())
+end)