!2 [sync] PR-1: 增加nlohmann-join源码包

From: @openeuler-sync-bot 
Reviewed-by: @anchuanxu 
Signed-off-by: @anchuanxu

nlohmann-json.spec

@@ -0,0 +1,51 @@
+%global debug_package %{nil}
+
+Name:           nlohmann-json
+Version:        3.11.2
+Release:        1
+Summary:        JSON for Modern C++
+License:        MIT
+URL:            https://github.com/nlohmann/json
+Source0:        v%{version}.tar.gz
+
+BuildRequires:  gcc-c++
+
+%description
+JSON for Modern C++
+
+%package        devel
+Summary:        Development files for nlohmann-json
+Requires:       %{name} = %{version}-%{release}
+
+%description    devel
+The devel package contains development files for nlohmann-json.
+It provides header files and libraries for nlohmann-json.
+
+%prep
+%autosetup -p1 -n json-%{version}
+
+%build
+mkdir build && cd build
+cmake \
+	-DJSON_Install=ON \
+	-DCMAKE_INSTALL_PREFIX="/usr" \
+	-DCMAKE_INSTALL_DATADIR="%{_libdir}" \
+	..
+make
+
+%install
+%make_install -C build
+
+%files
+%{_includedir}/*
+%{_libdir}/pkgconfig/*.pc
+%{_libdir}/cmake/*
+
+%files devel
+%{_includedir}/*
+%{_libdir}/pkgconfig/*.pc
+%{_libdir}/cmake/*
+
+%changelog
+* Wed May 3 2023 will_niutao <niutao2@huawei.com> - 3.11.2-1
+- Init for openEuler