Add a QuestShock startup splash; rename the app and data folder

CONFIG.md

@@ -3,7 +3,7 @@
 QuestShock can load a persistent, human-editable configuration file at
 startup, in addition to (and independent of) the engine's own `prefs.txt`.
 
-- **Location**: `/sdcard/questshock/questshock.config.json` - the same
+- **Location**: `/sdcard/QuestShock/questshock.config.json` - the same
   folder you already copy `res/data`/`res/sound` into (see README.md
   section 5.1).
 - **Format**: plain JSON, grouped by concern. Each top-level key is a
@@ -421,7 +421,7 @@ profile is active.
 
 The Controller Options tab shows a labeled illustration of whichever
 controller is actually active, driven by `res/controller_profiles/*.json`
-(bundled with the app, copied to `/sdcard/questshock/controller_profiles/`
+(bundled with the app, copied to `/sdcard/QuestShock/controller_profiles/`
 on every launch, refreshing the known bundled files without touching any
 extra ones you add there yourself). Each file: