!1 add libvarlink source package and spec file

From: @fu-shanqing 
Reviewed-by: @duguhaotian, @yangzhao_kl 
Signed-off-by: @yangzhao_kl

libvarlink.spec

@@ -0,0 +1,63 @@
+%global _hardened_build 1
+
+Name:           libvarlink
+Version:        21
+Release:        1
+Summary:        Varlink C Library
+License:        ASL 2.0 and BSD-3-Clause
+URL:            https://github.com/varlink/libvarlink
+Source0:        https://github.com/varlink/%{name}/archive/%{version}/%{name}-%{version}.tar.gz
+BuildRequires:  meson
+BuildRequires:  gcc
+BuildRequires:  glibc-langpack-de
+
+%description
+Varlink C Library
+
+%package        devel
+Summary:        Development files for %{name}
+Requires:       %{name}%{?_isa} = %{version}-%{release}
+
+%description    devel
+The libvarlink-devel package contains libraries and header files for
+developing applications that use libvarlink.
+
+%package        util
+Summary:        Varlink command line tools
+
+%description    util
+The libvarlink-util package contains varlink command line tools.
+
+%prep
+%autosetup
+
+%build
+%meson
+%meson_build
+
+%check
+export LC_CTYPE=C.utf8
+%meson_test
+
+%install
+%meson_install
+
+%ldconfig_scriptlets
+
+%files
+%license LICENSE
+%{_libdir}/libvarlink.so.*
+
+%files util
+%{_bindir}/varlink
+%{_datadir}/bash-completion/completions/varlink
+%{_datadir}/vim/vimfiles/after/*
+
+%files devel
+%{_includedir}/varlink.h
+%{_libdir}/libvarlink.so
+%{_libdir}/pkgconfig/libvarlink.pc
+
+%changelog
+* Wed Jan 26 2022 fushanqing <fushanqing@kylinos.cn> - 21-1
+- Initial package