Add Zephyr hello world project and update .gitignore

.gitignore

@@ -1,28 +1,36 @@
-# ---> Zephir
-# Cache files, generates by Zephir
-.temp/
-.libs/
+# Generic Zephyr build output
+build/
 
-# Object files, generates by linker
-*.lo
-*.la
-*.o
-*.loT
+# West generated files
+.west/
 
-# Files generated by configure and Zephir,
-# not required for extension compilation.
-ext/build/
-ext/modules/
-ext/Makefile*
-ext/config*
-ext/acinclude.m4
-ext/aclocal.m4
-ext/autom4te*
-ext/install-sh
-ext/ltmain.sh
-ext/missing
-ext/mkinstalldirs
-ext/run-tests.php
-ext/.deps
-ext/libtool
+# CMake generated files
+CMakeCache.txt
+CMakeFiles/
+Makefile
+cmake_install.cmake
 
+# Editor and OS generated files
+*~
+*.swp
+*.swo
+*.bak
+*.orig
+.DS_Store
+.vscode/
+.idea/
+
+# Doxygen output
+html/
+latex/
+
+# Python virtual environment
+virtualenv/
+.venv/
+
+# Miscellaneous
+*.log
+*.bin
+*.hex
+*.elf
+*.map

CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(hello_world)
+
+target_sources(app PRIVATE src/main.c)

prj.conf

@@ -0,0 +1 @@
+CONFIG_LOG=y

src/main.c

@@ -0,0 +1,10 @@
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+
+LOG_MODULE_REGISTER(hello_world, LOG_LEVEL_INF);
+
+int main(void)
+{
+    LOG_INF("Hello World from Zephyr!");
+    return 0;
+}