libfeedback: Make libfeedback.h only include other files

Move the init functions to their own header so we don't clutter
libfeedback.h more in the future.

Signed-off-by: Guido Günther <agx@sigxcpu.org>

libfeedback/lfb-main.c

@@ -1,9 +1,12 @@
 /*
  * Copyright (C) 2020 Purism SPC
+ *               2025 The Phosh Developers
+ *
  * SPDX-License-Identifier: LGPL-2.1+
+ *
  * Author: Guido Günther <agx@sigxcpu.org>
  */
-#include "libfeedback.h"
+#include "lfb-main.h"
 #include "lfb-gdbus.h"
 #include "lfb-priv.h"
 

libfeedback/lfb-main.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2025 The Phosh Developers
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+#pragma once
+
+#include "lfb-gdbus.h"
+
+#include <glib.h>
+
+#if !defined (__LIBFEEDBACK_H_INSIDE__) && !defined (LIBFEEDBACK_COMPILATION)
+#error "Only <libfeedback.h> can be included directly."
+#endif
+
+G_BEGIN_DECLS
+
+gboolean    lfb_init (const gchar *app_id, GError **error);
+void        lfb_uninit (void);
+void        lfb_set_app_id (const char *app_id);
+const char *lfb_get_app_id (void);
+gboolean    lfb_is_initted (void);
+void        lfb_set_feedback_profile (const char *profile);
+const char *lfb_get_feedback_profile (void);
+LfbGdbusFeedback *lfb_get_proxy (void);
+
+G_END_DECLS

libfeedback/libfeedback.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2020 Purism SPC
+ *               2025 The Phosh Developers
  *
  * SPDX-License-Identifier: LGPL-2.1+
  */
@@ -18,14 +19,6 @@ G_BEGIN_DECLS
 #include "lfb-enums.h"
 #include "lfb-event.h"
 #include "lfb-gdbus.h"
-
-gboolean    lfb_init (const gchar *app_id, GError **error);
-void        lfb_uninit (void);
-void        lfb_set_app_id (const char *app_id);
-const char *lfb_get_app_id (void);
-gboolean    lfb_is_initted (void);
-void        lfb_set_feedback_profile (const char *profile);
-const char *lfb_get_feedback_profile (void);
-LfbGdbusFeedback *lfb_get_proxy (void);
+#include "lfb-main.h"
 
 G_END_DECLS

libfeedback/meson.build

@@ -23,14 +23,15 @@ lfb_enum_sources = gnome.mkenums_simple('lfb-enums',
 libfeedback_headers = [
   'libfeedback.h',
   'lfb-event.h',
+  'lfb-main.h',
 ]
 
 libfeedback_sources = [
   generated_dbus_sources,
   lfb_enum_sources,
   libfeedback_headers,
-  'libfeedback.c',
   'lfb-event.c',
+  'lfb-main.c',
 ]
 
 libfeedback_deps = [