Codechange: vendor the nlohmann-json library (#11290)

(cherry picked from commit ba67f39db6)

# Conflicts:
#	.github/workflows/ci-build.yml
#	CMakeLists.txt
#	COMPILING.md
#	src/os/macosx/survey_osx.cpp
#	src/os/windows/survey_win.cpp
#	src/script/api/script_admin.cpp
#	src/script/api/script_event_types.cpp
#	src/tests/test_script_admin.cpp

src/3rdparty/CMakeLists.txt

@@ -3,6 +3,7 @@ add_subdirectory(fmt)
 add_subdirectory(icu)
 add_subdirectory(md5)
 add_subdirectory(squirrel)
+add_subdirectory(nlohmann)
 add_subdirectory(opengl)
 add_subdirectory(cpp-btree)
 add_subdirectory(mingw-std-threads)

src/3rdparty/nlohmann/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_files(
+    json.hpp
+)

src/3rdparty/nlohmann/LICENSE.MIT

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2013-2022 Niels Lohmann
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

src/network/network_survey.cpp

@@ -37,7 +37,7 @@
 #include "../base_media_base.h"
 #include "../blitter/factory.hpp"
 
-#include <nlohmann/json.hpp>
+#include "../3rdparty/nlohmann/json.hpp"
 
 #include "../safeguards.h"
 

src/os/macosx/survey_osx.cpp

@@ -10,10 +10,10 @@
 #include "../../stdafx.h"
 
 #include "../../core/format.hpp"
+#include "../../3rdparty/nlohmann/json.hpp"
 #include "macos.h"
 
 #include <mach-o/arch.h>
-#include <nlohmann/json.hpp>
 #include <thread>
 
 #include "../../safeguards.h"

src/os/unix/survey_unix.cpp

@@ -9,7 +9,8 @@
 
 #include "../../stdafx.h"
 
-#include <nlohmann/json.hpp>
+#include "../../3rdparty/nlohmann/json.hpp"
+
 #include <sys/utsname.h>
 #include <thread>
 #include <unistd.h>

src/os/windows/survey_win.cpp

@@ -10,8 +10,8 @@
 #include "../../stdafx.h"
 
 #include "../../core/format.hpp"
+#include "../../3rdparty/nlohmann/json.hpp"
 
-#include <nlohmann/json.hpp>
 #include <thread>
 #include <windows.h>
 

src/script/api/script_event_types.cpp

@@ -16,6 +16,7 @@
 #include "../../engine_base.h"
 #include "../../articulated_vehicles.h"
 #include "../../string_func.h"
+#include "../../3rdparty/nlohmann/json.hpp"
 #include "table/strings.h"
 
 #include "../../safeguards.h"