Squashed 'libs/cli11/' content from commit dcbcb47

git-subtree-dir: libs/cli11
git-subtree-split: dcbcb4721dda5dab0a56d9faaaee50e6a30f7758

tests/mesonTest/meson.build

@@ -0,0 +1,5 @@
+project('mesonTest', ['c', 'cpp'], default_options: ['cpp_std=c++11'])
+
+cli11_dep = subproject('CLI11').get_variable('CLI11_dep')
+
+mainExe = executable('main', ['main.cpp'], dependencies: [cli11_dep])