welcome: init welcome manager (#12409)

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

src/managers/WelcomeManager.cpp

@@ -0,0 +1,31 @@
+#include "WelcomeManager.hpp"
+#include "../debug/Log.hpp"
+#include "../config/ConfigValue.hpp"
+#include "../helpers/fs/FsUtils.hpp"
+
+#include <hyprutils/os/Process.hpp>
+
+using namespace Hyprutils::OS;
+
+CWelcomeManager::CWelcomeManager() {
+    static auto PAUTOGEN = CConfigValue<Hyprlang::INT>("autogenerated");
+
+    if (!*PAUTOGEN) {
+        Debug::log(LOG, "[welcome] skipping, not autogen");
+        return;
+    }
+
+    if (!NFsUtils::executableExistsInPath("hyprland-welcome")) {
+        Debug::log(LOG, "[welcome] skipping, no welcome app");
+        return;
+    }
+
+    m_fired = true;
+
+    CProcess welcome("hyprland-welcome", {});
+    welcome.runAsync();
+}
+
+bool CWelcomeManager::fired() {
+    return m_fired;
+}