feat(prefs): dev build defaults and skip version migration

- Set PACKAGE_VERSION_SUFFIX to "dev" so isDevelopmentVersion()
  returns true for local and CI dev builds.  Release build scripts
  (build.sh, build.bat) override this to "" via cmake -D flag.
- Skip the version migration dialog for dev builds in
  DlgVersionMigrator::exec(), alongside the existing
  usingCustomDirectories() check.
- Set UserParameterTemplate to the KindredCreate preference pack so
  first-run installs start with the Catppuccin Mocha theme defaults
  instead of bare FreeCAD defaults.

src/Main/MainGui.cpp

@@ -199,11 +199,13 @@ int main(int argc, char** argv)
     App::Application::Config()["StartWorkbench"] = "PartDesignWorkbench";
     // App::Application::Config()["HiddenDockWindow"] = "Property editor";
     App::Application::Config()["SplashAlignment"] = "Bottom|Left";
-    App::Application::Config()["SplashTextColor"] = "#cdd6f4";  // Catppuccin Mocha text
+    App::Application::Config()["SplashTextColor"] = "#cdd6f4";     // Catppuccin Mocha text
     App::Application::Config()["SplashWarningColor"] = "#f38ba8";  // Catppuccin Mocha red
-    App::Application::Config()["SplashInfoColor"] = "#a6adc8";  // Catppuccin Mocha subtext0
+    App::Application::Config()["SplashInfoColor"] = "#a6adc8";     // Catppuccin Mocha subtext0
     App::Application::Config()["SplashInfoPosition"] = "6,75";
     App::Application::Config()["DesktopFileName"] = "net.kindredsystems.KindredCreate";
+    App::Application::Config()["UserParameterTemplate"]
+        = "data/Gui/PreferencePacks/KindredCreate/KindredCreate.cfg";
 
     try {
         // Init phase ===========================================================