Add example using gstreamer-full

It will be used by the CI to verify we can build it.

examples/static-plugins/main.c

@@ -0,0 +1,17 @@
+#include <gst/gst.h>
+#include <gst/gstinitstaticplugins.h>
+
+int
+main (int argc, char *argv[])
+{
+  GstElement *e;
+
+  gst_init (&argc, &argv);
+  gst_init_static_plugins ();
+
+  e = gst_element_factory_make ("identity", NULL);
+  g_assert_nonnull (e);
+  g_object_unref (e);
+
+  return 0;
+}

examples/static-plugins/meson.build

@@ -0,0 +1,6 @@
+project('myapp', 'c')
+
+dep = dependency('gstreamer-full-1.0')
+app = executable('myapp', 'main.c', dependencies : dep)
+
+test('test-gstreamer-full', app)