Add Overworld accessors and enhance testing framework

- Introduced new methods in `Controller`, `EditorManager`, and `OverworldEditor` to access the `Overworld` instance, improving modularity and interaction with the overworld data.
- Added `GetTile` method in `Overworld` to retrieve tile data based on coordinates, enhancing functionality for tile manipulation.
- Implemented a new testing framework with automated GUI tests, including `CanvasSelectionTest` and `FrameworkSmokeTest`, to validate user interactions and ensure robustness.
- Updated `CMakeLists.txt` to include new test files and dependencies, streamlining the build process for testing.
- Refactored logging behavior to ensure proper file handling during logging operations, improving reliability in logging outputs.

test/e2e/framework_smoke_test.cc

@@ -0,0 +1,16 @@
+#include "e2e/framework_smoke_test.h"
+#include "test_utils.h"
+#include "imgui.h"
+#include "imgui_test_engine/imgui_te_context.h"
+
+// Smoke test for the E2E testing framework.
+// This test is run by the `test-gui` command.
+// It opens a window, clicks a button, and verifies that the button was clicked.
+// The GUI for this test is rendered in `test/yaze_test.cc`.
+void E2ETest_FrameworkSmokeTest(ImGuiTestContext* ctx)
+{
+    yaze::test::gui::LoadRomInTest(ctx, "zelda3.sfc");
+    ctx->SetRef("Hello World Window");
+    ctx->ItemClick("Button");
+    ctx->ItemCheck("Clicked 1 times");
+}