Add vscode extension suggestions and ignore the rest

.gitignore

@@ -25,4 +25,8 @@ demo/bin/*
 *.exp
 
 # Other stuff
-*.log
+*.log
+
+# VSCode
+.vscode/*
+!.vscode/extensions.json

.vscode/extensions.json

@@ -0,0 +1,6 @@
+{
+    "recommendations": [
+        "ms-vscode.cpptools-extension-pack",
+        "ms-python.python"
+    ]
+}