add version constants to auth, river and wireplumber libs

lib/auth/include/astal-auth.h.in

@@ -4,6 +4,12 @@
 #include <gio/gio.h>
 #include <glib-object.h>
 
+
+#define ASTAL_AUTH_MAJOR_VERSION @MAJOR_VERSION@
+#define ASTAL_AUTH_MINOR_VERSION @MINOR_VERSION@
+#define ASTAL_AUTH_MICRO_VERSION @MICRO_VERSION@
+#define ASTAL_AUTH_VERSION "@VERSION@"
+
 G_BEGIN_DECLS
 
 #define ASTAL_AUTH_TYPE_PAM (astal_auth_pam_get_type())

lib/auth/include/meson.build

@@ -1,4 +1,17 @@
-astal_auth_inc = include_directories('.')
-astal_auth_headers = files('astal-auth.h')
 
-install_headers('astal-auth.h')
+config = configure_file(
+  input: 'astal-auth.h.in',
+  output: 'astal-auth.h',
+  configuration: {
+    'VERSION': meson.project_version(),
+    'MAJOR_VERSION': version_split[0],
+    'MINOR_VERSION': version_split[1],
+    'MICRO_VERSION': version_split[2],
+  },
+)
+
+
+astal_auth_inc = include_directories('.')
+astal_auth_headers = config
+
+install_headers(astal_auth_headers)