build: use meson wraps instead of thirdparty/

Get rid of the "vendored" thirdparty/ libraries, instead rely on meson
"wrap" subprojects.

mu/meson.build

@@ -35,7 +35,7 @@ mu = executable(
   'mu-cmd-view.cc',
   'mu-cmd.cc'
 ],
-  dependencies: [ glib_dep, gmime_dep, cli11_dep,
+  dependencies: [ glib_dep, gmime_dep, cli11_dep, tabulate_dep,
                   lib_mu_dep, mu_scm_dep, thread_dep, config_h_dep ],
   cpp_args: ['-DMU_SCRIPTS_DIR="' + datadir / 'mu' / 'scripts' + '"'],
   install: true)

mu/mu-cmd-info.cc

@@ -28,7 +28,7 @@
 
 #include <fmt/ostream.h>
 
-#include <thirdparty/tabulate.hpp>
+#include <tabulate/table.hpp>
 
 using namespace Mu;
 using namespace tabulate;

mu/mu-cmd.cc

@@ -43,7 +43,7 @@
 #include "utils/mu-utils-file.hh"
 #include "utils/mu-utils.hh"
 
-#include <thirdparty/tabulate.hpp>
+#include <tabulate/table.hpp>
 
 using namespace Mu;
 

mu/mu-options.cc

@@ -46,11 +46,7 @@
 #include "mu-options.hh"
 #include "mu-script.hh"
 
-#ifdef USE_EMBEDDED_CLI11
-#include "CLI11.hpp"
-#else
-#include "CLI/CLI.hpp"
-#endif
+#include <CLI/CLI.hpp>
 
 using namespace Mu;