reworks game preferences (characters v2 staging) (#6310)

Co-authored-by: silicons <no@you.cat>
Co-authored-by: LordME <58342752+TheLordME@users.noreply.github.com>

code/modules/keybindings/keybind/_keybind.dm

@@ -3,13 +3,15 @@
 	var/list/classic_keys
 	var/name
 	var/full_name
-	var/description = ""
+	var/description = "No description provided."
 	var/category = CATEGORY_MISC
 	var/weight = WEIGHT_LOWEST
+	// todo: what is this for / why do we have it / should we do this?
+	// keybinds using primarily signals is kind of a :/
+	// because said components can't really inject keybind data into prefs..
 	var/keybind_signal
 
 /datum/keybinding/New()
-
 	// Default keys to the master "hotkey_keys"
 	if(LAZYLEN(hotkey_keys) && !LAZYLEN(classic_keys))
 		classic_keys = hotkey_keys.Copy()
@@ -22,3 +24,17 @@
 
 /datum/keybinding/proc/can_use(client/user)
 	return TRUE
+
+/datum/keybinding/proc/is_visible(client/user)
+	return TRUE
+
+/**
+ * Data for a GamePreferenceKeybind
+ */
+/datum/keybinding/proc/tgui_keybinding_data()
+	return list(
+		"id" = name,
+		"name" = full_name,
+		"desc" = description,
+		"category" = category,
+	)