feat(layouts): 实现 fair/fullscreen/maximize 内置布局

tests/core/CMakeLists.txt

@@ -22,6 +22,9 @@ add_executable(${TEST_APP_NAME}
     ${SOURCE_DIR}/core/runtime.c
     ${SOURCE_DIR}/core/state.c
     ${SOURCE_DIR}/core/window.c
+    ${SOURCE_DIR}/layouts/fair.c
+    ${SOURCE_DIR}/layouts/fullscreen.c
+    ${SOURCE_DIR}/layouts/maximize.c
 )
 
 target_include_directories(${TEST_APP_NAME} SYSTEM