fix: clear cache btn

app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/SettingsViewModel.kt

@@ -50,7 +50,8 @@ class SettingsViewModel(
     }
 
     fun clearCacheDir() {
-        application.cacheDir.deleteRecursively()
+        application.externalCacheDir?.deleteRecursively()
+        application.showToast(R.string.action_cleared_cache)
     }
 
     init {

app/src/main/res/values/strings.xml

@@ -29,6 +29,7 @@
   <string name="action_collapse">Collapse</string>
   <string name="action_expand">Expand</string>
   <string name="action_copied">Copied!</string>
+  <string name="action_cleared_cache">Cleared cache!</string>
 
   <string name="permissions_grant_title">Grant Permissions</string>
   <string name="permissions_grant_body">In order for Aliucord Manager to work properly, you need to grant file permissions. Since shared data in stored in ~/Aliucord, permissions are required in order for manager to function.</string>