[librest/gwagner/soupapiversion] meson: Add soupapiversion to pkg-config file

[Günther Wagner <gwagner src gnome org>]

commit 388e0f9e2996a8d7deeede90109633a5efd0bc02
Author: Günther Wagner <info gunibert de>
Date:   Sat Jun 18 01:16:22 2022 +0200

    meson: Add soupapiversion to pkg-config file
    
    Fixes https://gitlab.gnome.org/GNOME/librest/-/issues/12

 meson.build | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/meson.build b/meson.build
index f7dc44f..db4eee6 100644
--- a/meson.build
+++ b/meson.build
@@ -93,6 +93,7 @@ pkgconfig.generate(librest_lib,
   requires: [ glib_dep, libsoup_dep, libxml_dep, libjson_glib_dep ],
   variables: [
     'apiversion=@0@'.format(librest_api_version),
+    'soupapiversion=@0@'.format(libsoup_api_version),
   ],
 )
 
@@ -104,6 +105,7 @@ pkgconfig.generate(librest_extras_lib,
   requires: [ glib_dep, libsoup_dep, libxml_dep],
   variables: [
     'apiversion=@0@'.format(librest_api_version),
+    'soupapiversion=@0@'.format(libsoup_api_version),
   ],
 )