Add Objective-C and Objective-C++ languages for macOS

Author: dreamer-coding

code/meson.build

@@ -1,2 +1,7 @@
+if host_machine.system() == 'darwin'
+    add_languages('objc', native: false, required: true)
+    add_languages('objcpp', native: false, required: true)
+endif
+
 subdir('logic')
-subdir('tests')
+subdir('tests')