cli-parser (#4)

Goal of this PR should be to integrate a working CLI parser so that commands can be sent to the Printer class to print text, such as
ptprnt -t=FooBar
also, standard flags for setting the output verbosity and help should be implemented

Reviewed-on: #4

meson.build

@@ -8,6 +8,13 @@ usb_dep = dependency('libusb-1.0')
 log_dep = dependency('spdlog')
 pangocairo_dep = dependency('pangocairo')
 
+# CLI11 
+cli11_proj = subproject('cli11')
+cli11_dep = cli11_proj.get_variable('CLI11_dep')
+if not cli11_dep.found()
+    error('CLI11 not found, can not proceed')
+endif
+
 incdir = include_directories('src')
 
 ptprnt_hpps = [
@@ -38,7 +45,7 @@ ptprnt_srcs = [
 ptprnt_lib = library('ptprnt', 
                      include_directories: incdir,
                      install: true,
-                     dependencies: [usb_dep, log_dep, pangocairo_dep],
+                     dependencies: [usb_dep, log_dep, pangocairo_dep, cli11_dep],
                      sources: [ptprnt_hpps, ptprnt_srcs])
 
 ptprnt_dep = declare_dependency(include_directories: incdir,
@@ -48,13 +55,14 @@ ptprnt_exe = executable(
     'ptprnt', 
     'src/main.cpp',
     install: true,
-    dependencies : [usb_dep, log_dep, ptprnt_dep],
+    dependencies : [usb_dep, log_dep, cli11_dep, ptprnt_dep],
     cpp_args : ['-DPROJ_VERSION="'+meson.project_version()+'"'],
 )
 
 
+### Unit tests
 
-#cmake = import('cmake')
+# GTest
 gtest_proj = subproject('gtest')
 gtest_dep = gtest_proj.get_variable('gtest_main_dep')
 if not gtest_dep.found()