feat: Implement modular build system for Yaze

- Added option to enable modular build with `YAZE_USE_MODULAR_BUILD`.
- Updated CMake configuration to support modular libraries for core, editor, graphics, GUI, and emulator functionalities.
- Refactored existing libraries to separate concerns and improve build times.
- Introduced new utility library `yaze_util` for low-level utilities.
- Adjusted CI and release workflows to accommodate the new build system.
- Updated various source files to reflect new include paths and modular structure.
- Enhanced YAML configuration handling in the agent component.

src/app/gui/gui_library.cmake

@@ -0,0 +1,49 @@
+# ==============================================================================
+# Yaze GUI Library
+# ==============================================================================
+# This library contains all GUI-related functionality:
+# - Canvas system
+# - ImGui widgets and utilities
+# - Input handling
+# - Theme management
+# - Color utilities
+# - Background rendering
+#
+# Dependencies: yaze_gfx, yaze_util, ImGui, SDL2
+# ==============================================================================
+
+add_library(yaze_gui STATIC ${YAZE_GUI_SRC})
+
+target_include_directories(yaze_gui PUBLIC
+  ${CMAKE_SOURCE_DIR}/src
+  ${CMAKE_SOURCE_DIR}/src/lib
+  ${CMAKE_SOURCE_DIR}/src/lib/imgui
+  ${CMAKE_SOURCE_DIR}/incl
+  ${SDL2_INCLUDE_DIR}
+  ${PROJECT_BINARY_DIR}
+)
+
+target_link_libraries(yaze_gui PUBLIC
+  yaze_gfx
+  yaze_util
+  yaze_common
+  ImGui
+  ${SDL_TARGETS}
+)
+
+set_target_properties(yaze_gui PROPERTIES
+  POSITION_INDEPENDENT_CODE ON
+  ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
+)
+
+# Platform-specific compile definitions
+if(UNIX AND NOT APPLE)
+  target_compile_definitions(yaze_gui PRIVATE linux stricmp=strcasecmp)
+elseif(APPLE)
+  target_compile_definitions(yaze_gui PRIVATE MACOS)
+elseif(WIN32)
+  target_compile_definitions(yaze_gui PRIVATE WINDOWS)
+endif()
+
+message(STATUS "✓ yaze_gui library configured")