chore: add simple iw3 system test

test/SystemTests/Game/IW3/SimpleZoneIW3.cpp

@@ -0,0 +1,45 @@
+#include "Linker.h"
+#include "OatTestPaths.h"
+#include "SystemTestsPaths.h"
+
+#include <catch2/catch_test_macros.hpp>
+#include <format>
+#include <memory>
+#include <string>
+
+using namespace std::literals;
+
+namespace
+{
+    TEST_CASE("Simple Zone(IW3)", "[iw3][system][simple]")
+    {
+        const auto assetSearchPath = oat::paths::GetSystemTestsDirectory() / "Game/IW3/simple";
+        const auto sourceSearchPath = oat::paths::GetSystemTestsDirectory() / "Game/IW3/simple";
+        const auto outputPath = oat::paths::GetTempDirectory("iw3_simple");
+
+        const char* argStrings[]{
+            "SystemTests", // bin
+            "--verbose",
+            "--asset-search-path",
+            assetSearchPath.c_str(),
+            "--source-search-path",
+            sourceSearchPath.c_str(),
+            "--output-folder",
+            outputPath.c_str(),
+            "SimpleZoneIW3",
+        };
+
+        LinkerArgs args;
+
+        bool shouldContinue = true;
+        const auto couldParseArgs = args.ParseArgs(std::extent_v<decltype(argStrings)>, argStrings, shouldContinue);
+
+        REQUIRE(couldParseArgs);
+        REQUIRE(shouldContinue);
+
+        const auto linker = Linker::Create(std::move(args));
+        const auto linkerResult = linker->Start();
+
+        REQUIRE(linkerResult);
+    }
+} // namespace

test/SystemTests/Game/IW3/simple/SimpleZone.txt

@@ -0,0 +1 @@
+This is a simple zone.

test/SystemTests/Game/IW3/simple/SimpleZoneIW3.zone

@@ -0,0 +1,4 @@
+>game,IW3
+
+rawfile,SimpleZone.txt
+