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