build: partially transition userpsace build system to CMake

Replace the legacy userpsace Makefile with the CMake build system for the kernel

The userspace is the only one still utilizing manual Makefiles, it will eventually be CMakified

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

.vscode/c_cpp_properties.json

@@ -0,0 +1,18 @@
+{
+  "configurations": [
+    {
+      "name": "linux-gcc-x64",
+      "includePath": [
+        "${workspaceFolder}/**"
+      ],
+      "compilerPath": "/usr/bin/gcc",
+      "cStandard": "gnu11",
+      "cppStandard": "${default}",
+      "intelliSenseMode": "linux-gcc-x64",
+      "compilerArgs": [
+        ""
+      ]
+    }
+  ],
+  "version": 4
+}