build: remove use of 'project' keyword in CMakeLists (#2640)

It looks like it's not supported on ESP32: "project command is not scriptable"

Signed-off-by: Philippe Coval <philippe.coval@huawei.com>

CMakeLists.txt

@@ -1,6 +1,3 @@
-project(lvgl
-  HOMEPAGE_URL https://github.com/lvgl/lvgl/)
-
 if(ESP_PLATFORM)
 
     file(GLOB_RECURSE SOURCES src/*.c)
@@ -108,7 +105,7 @@ if("${LIB_INSTALL_DIR}" STREQUAL "")
 endif()
 
 if("${INC_INSTALL_DIR}" STREQUAL "")
-    set(INC_INSTALL_DIR "include/${CMAKE_PROJECT_NAME}")
+    set(INC_INSTALL_DIR "include/lvgl")
 endif()
 
 install(DIRECTORY "${CMAKE_SOURCE_DIR}/src"
@@ -116,12 +113,12 @@ install(DIRECTORY "${CMAKE_SOURCE_DIR}/src"
     FILES_MATCHING
     PATTERN "*.h")
 
-set_target_properties(${CMAKE_PROJECT_NAME} PROPERTIES
+set_target_properties(lvgl PROPERTIES
     OUTPUT_NAME ${CMAKE_PROJECT_NAME}
     ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"
     PUBLIC_HEADER "${LVGL_PUBLIC_HEADERS}")
 
-install(TARGETS ${CMAKE_PROJECT_NAME}
+install(TARGETS lvgl
     ARCHIVE DESTINATION "${LIB_INSTALL_DIR}"
     PUBLIC_HEADER DESTINATION "${INC_INSTALL_DIR}")
 endif(install)