Add USB stub, add logging using spdlog

.vscode/settings.json

@@ -78,6 +78,10 @@
                             "typeindex": "cpp",
                             "typeinfo": "cpp",
                             "valarray": "cpp",
-                            "variant": "cpp"
+                            "variant": "cpp",
+                            "csignal": "cpp",
+                            "any": "cpp",
+                            "regex": "cpp",
+                            "future": "cpp"
                         }
 }