Add scripted terminal thin client

src/main.zig

@@ -3,6 +3,7 @@ const protocol = @import("protocol.zig");
 const replay = @import("replay.zig");
 const session = @import("session.zig");
 const socket = @import("socket.zig");
+const tui = @import("tui.zig");
 
 pub const version = "0.1.0-dev";
 
@@ -119,6 +120,7 @@ test {
     _ = replay;
     _ = session;
     _ = socket;
+    _ = tui;
 }
 
 test "regular: help text names the binary and smoke boundary" {