Cont/kb/mouse focus priorities and behaviors reworked (#15)

* ensure focus after cont/kb input + enable mouse on SDL_QUIT + force focus to prompt while open

* only force prompt focus if mouse is not active

* default kb input, mouse click switches to kb focused input

include/recomp_input.h

@@ -78,7 +78,7 @@ namespace recomp {
     void stop_scanning_input();
     void finish_scanning_input(InputField scanned_field);
     void cancel_scanning_input();
-    void set_cont_or_kb(bool cont_interacted);
+    void config_menu_set_cont_or_kb(bool cont_interacted);
     InputField get_scanned_input();
     
     struct DefaultN64Mappings {

include/recomp_ui.h

@@ -116,6 +116,8 @@ namespace recomp {
 	PromptContext *get_prompt_context(void);
 
 	bool get_cont_active(void);
+	void set_cont_active(bool active);
+	void activate_mouse();
 }
 
 #endif