use logo as image in manifest (#78)

Author: liamHowatt

manifest.json

@@ -13,7 +13,10 @@
     "description": "Example project to use LVGL on top of Linux graphics stack. Currently supported backends are either legacy framebuffer (fbdev), modern DRM/KMS, or SDL2.",
     "shortDescription": "CMake project for Linux devices supporting various display drivers.",
     "urlToClone": "https://github.com/lvgl/lv_port_linux",
-    "logos": ["https://raw.githubusercontent.com/lvgl/project-creator/master/meta/images/linux/logo.svg"],
+    "logos": [
+        "https://raw.githubusercontent.com/lvgl/project-creator/master/meta/images/linux/logo.svg"
+    ],
+    "image": "https://raw.githubusercontent.com/lvgl/project-creator/master/meta/images/linux/logo.svg",
     "branches": [
         "release/v9.2"
     ],