Export keybindings_load_keyfile() for plugins

This allows plugins to reload keybindings later during their execution.
For more info see the comment in the commit.

Closes #1430

src/keybindings.c

@@ -824,6 +824,15 @@ static void apply_kb_accel(GeanyKeyGroup *group, GeanyKeyBinding *kb, gpointer u
 }
 
 
+/** Reloads keybinding settings from configuration file. Normally plugins do
+ * not need to call this function as it is called automatically when a the
+ * plugin is activated. However, plugins which need to create keybindings
+ * dynamically and reload them when needed should call this function after
+ * all keybindings have been updated with plugin_set_key_group() and
+ * keybindings_set_item() calls - this makes sure that the corresponding user
+ * keybinding shortcuts are applied.
+ * @since 1.31. */
+GEANY_API_SYMBOL
 void keybindings_load_keyfile(void)
 {
 	load_user_kb();

src/keybindings.h

@@ -293,6 +293,8 @@ GeanyKeyBinding *keybindings_get_item(GeanyKeyGroup *group, gsize key_id);
 
 GdkModifierType keybindings_get_modifiers(GdkModifierType mods);
 
+void keybindings_load_keyfile(void);
+
 #ifdef GEANY_PRIVATE
 
 extern GPtrArray *keybinding_groups;	/* array of GeanyKeyGroup pointers */
@@ -300,8 +302,6 @@ extern GPtrArray *keybinding_groups;	/* array of GeanyKeyGroup pointers */
 
 void keybindings_init(void);
 
-void keybindings_load_keyfile(void);
-
 void keybindings_free(void);
 
 GeanyKeyGroup *keybindings_get_core_group(guint id);