apps: Add gclient

apps/CMakeLists.txt

@@ -40,3 +40,4 @@ luna_app(kill.cpp kill)
 luna_app(gol.cpp gol)
 luna_app(touch.cpp touch)
 luna_app(free.cpp free)
+luna_app(gclient.cpp gclient)

apps/gclient.cpp

@@ -0,0 +1,20 @@
+#include <os/ArgumentParser.h>
+#include <os/LocalClient.h>
+
+Result<int> luna_main(int argc, char** argv)
+{
+    StringView socket_path = "/tmp/wind.sock";
+
+    os::ArgumentParser parser;
+    parser.add_description("A graphical user interface client."_sv);
+    parser.add_system_program_info("gclient"_sv);
+    parser.add_value_argument(socket_path, 's', "socket"_sv, "the path for the local IPC socket"_sv);
+    parser.parse(argc, argv);
+
+    auto client = TRY(os::LocalClient::connect(socket_path, false));
+
+    StringView message = "hello";
+    TRY(client->send((const u8*)message.chars(), message.length()));
+
+    return 0;
+}