Add app logos (#1557)

* Add app logos

* Typos

list_builder.py

@@ -213,6 +213,16 @@ def build_catalog():
         if "manifest" in app and "resources" in app["manifest"]:
             del app["manifest"]["resources"]
 
+    for appid, app in result_dict_with_manifest_v2.items():
+        appid = appid.lower()
+        if os.path.exists(f"logos/{appid}.png"):
+            logo_hash = subprocess.check_output(["sha256sum", f"logos/{appid}.png"]).strip().decode("utf-8").split()[0]
+            os.system(f"cp logos/{appid}.png builds/default/v3/logos/{logo_hash}.png")
+            # FIXME: implement something to cleanup old logo stuf in the builds/.../logos/ folder somehow
+        else:
+            logo_hash = None
+        app["logo_hash"] = logo_hash
+
     os.system("mkdir -p ./builds/default/v3/")
     with open("builds/default/v3/apps.json", "w") as f:
         f.write(