add playground instead of example

Author: Folleach

.devcontainer/devcontainer.json

@@ -0,0 +1,25 @@
+{
+	"name": "GeometryDashAPI",
+	"image": "mcr.microsoft.com/devcontainers/base:bullseye",
+
+	"features": {
+		"ghcr.io/devcontainers/features/dotnet": {
+			"version": "8.0",
+			"additionalVersions": "2.2"
+		}
+	},
+
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-dotnettools.csdevkit",
+				"mhutchie.git-graph"
+			]
+		},
+		"codespaces": {
+			"openFiles": [
+				"/Playground/Program.cs"
+			]
+		}
+	}
+}

.gitignore

@@ -257,4 +257,6 @@ paket-files/
 
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
-*.pyc
+*.pyc
+
+/data/

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "playground",
+            "type": "coreclr",
+            "preLaunchTask": "dotnet: build",
+            "request": "launch",
+            "program": "${workspaceFolder}/Playground/bin/Debug/net8.0/Playground.dll",
+            "env": {
+                "DOTNET_WORKING_DIRECTORY": "${workspaceFolder}"
+            }
+        }
+    ]
+}