97 custom arguments broken (#99)

* golang debug

* handle template in playlist download

* code refactoring, dropped goccy go json

.vscode/launch.json

@@ -5,11 +5,11 @@
     "version": "0.2.0",
     "configurations": [
         {
-            "name": "Launch file",
+            "name": "go",
             "type": "go",
             "request": "launch",
             "mode": "debug",
-            "program": "${file}"
+            "program": "main.go"
         },
         {
             "type": "chrome",