feat: Improvements in module exports

Add new `Inkay_GetStatus` which can be used for retrieving the status of
the module. Also add better handling of module initialization, and show
a notification from the plugin if the module can't be found.

src/config.cpp

@@ -18,6 +18,8 @@
 #include "config.h"
 
 bool Config::connect_to_network = false;
+bool Config::initialized = false;
+bool Config::shown_uninitialized_warning = false;
 
 static config_strings strings;