General: Add default .vscode directory

The .vscode contains 2 C++ profiles that use my custom toolchain and
correct library include paths. One configuration is for kernel and other
for userspace

.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "cmake.configureOnOpen": false,
+    "editor.tabSize": 4,
+    "editor.insertSpaces": false,
+    "editor.detectIndentation": false
+}