libsysprof, libsysprof-ui: Generate pkg-config dependencies

Otherwise, using libsysprof-ui will usually fail because <dazzle.h>
is not added to the search path.

Resolves: https://gitlab.gnome.org/GNOME/sysprof/-/issues/49
Signed-off-by: Simon McVittie <smcv@debian.org>

src/libsysprof-capture/meson.build

@@ -72,5 +72,6 @@ if not meson.is_subproject()
     description: 'The static capture library for tools that generate profiling capture data',
     install_dir: join_paths(get_option('libdir'), 'pkgconfig'),
       variables: [ 'datadir=' + datadir_for_pc_file ],
+    requires_private: libsysprof_capture_deps,
   )
 endif