test: add build configs for catch2

test/config.cpp

@@ -0,0 +1,4 @@
+#define CATCH_CONFIG_MAIN
+#include "config.hpp"
+
+#include <catch2/catch.hpp>

test/meson.build

@@ -0,0 +1,21 @@
+test_inc = include_directories('../include')
+test_dep = [
+    catch2,
+    fmt,
+    jsoncpp,
+    spdlog,
+]
+
+config_test = executable(
+    'config_test',
+    'config.cpp',
+    '../src/config.cpp',
+    dependencies: test_dep,
+    include_directories: test_inc,
+)
+
+test(
+    'Configuration test',
+    config_test,
+    workdir: meson.source_root(),
+)