chore: check exact paths of test executable and provide temp dir

test/Catch2Common/OatTestPaths.cpp

@@ -0,0 +1,27 @@
+#include "OatTestPaths.h"
+
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+namespace oat::paths
+{
+    std::filesystem::path GetSourceDirectory()
+    {
+        return fs::current_path() / "src";
+    }
+
+    std::filesystem::path GetTestDirectory()
+    {
+        return fs::current_path() / "test";
+    }
+
+    std::filesystem::path GetTempDirectory()
+    {
+        auto result = fs::current_path() / "build" / ".tmp";
+        if (!fs::is_directory(result))
+            fs::create_directories(result);
+
+        return result;
+    }
+} // namespace oat::paths