chore(lab04): add laboratory files

src/03-led-controller/.clangd

@@ -0,0 +1,13 @@
+CompileFlags:
+    Add:
+        # Architecture and cross-compilation
+        - "--target=aarch64-linux-gnu"
+
+        # Setup sysroot for buildroot
+        - "--sysroot=/buildroot/output/host/aarch64-buildroot-linux-gnu/sysroot"
+
+        # Add specific header of linux from buildroot
+        - "-I/buildroot/output/build/linux-headers-5.15.148/include"
+        - "-I/buildroot/output/build/linux-headers-5.15.148/arch/arm64/include"
+        - "-I/buildroot/output/build/linux-headers-5.15.148/arch/arm64/include/generated"
+        - "-I/buildroot/output/build/linux-headers-5.15.148/**"

src/03-led-controller/CMakeLists.txt

@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.28)
+project(led-controller)
+
+include(../nanopi.cmake)
+add_executable(main main.c)

src/03-led-controller/main.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main() {
+    printf("Led controller");
+
+    return 0;
+}