feat: Enable Unity builds for faster compilation

- Added an option to enable Unity (Jumbo) builds in CMake.
- Updated CMakeLists.txt to conditionally set CMAKE_UNITY_BUILD and batch size.
- Removed outdated analysis documentation for overworld implementation.
- Deleted z3ed resources YAML file as it is no longer needed.
- Refactored CMake files to modularize the build system, separating core, editor, gfx, gui, and zelda3 components into library files.
- Added precompiled headers for various libraries to improve compilation times.
- Updated yaze_config.h.in to define IMGUI_DEFINE_MATH_OPERATORS for C++ compatibility.
- Enhanced editor integration tests with necessary includes for ImGui.

src/app/test/test.cmake

@@ -12,14 +12,20 @@
 
 add_library(yaze_test_support STATIC app/test/test_manager.cc)
 
+target_precompile_headers(yaze_test_support PRIVATE
+  <memory>
+  <set>
+  <string>
+  <string_view>
+  <vector>
+)
+
 target_include_directories(yaze_test_support PUBLIC
   ${CMAKE_SOURCE_DIR}/src
   ${CMAKE_SOURCE_DIR}/incl
   ${PROJECT_BINARY_DIR}
 )
 
-# The test support library needs to link against all the major app libraries
-# to be able to test them.
 target_link_libraries(yaze_test_support PUBLIC
   yaze_editor
   yaze_core_lib