feat: add quizlet (#71)

* feat: add quizlet

Co-authored-by: spaghettiosareyummy <67806039+spaghettiosareyummy@users.noreply.github.com>

* remove dead code

---------

Co-authored-by: spaghettiosareyummy <67806039+spaghettiosareyummy@users.noreply.github.com>

src/userstyles.yml

@@ -53,6 +53,8 @@ collaborators:
   - &elkrien
     name: Elkrien
     url: https://github.com/elkrien
+  - &spaghettiosareyummy
+    url: https://github.com/spaghettiosareyummy
   - &stonks3141
     name: Stonks3141
     url: https://github.com/Stonks3141
@@ -243,6 +245,12 @@ userstyles:
       app-link: "https://proton.me/"
       usage: "Open Proton Mail and click the settings in the top right, then set the base theme to `Proton` if you are using the Latte flavor, otherwise set it to `Carbon`"
       current-maintainers: [*soya-daizu]
+  quizlet:
+    name: Quizlet
+    category: productivity
+    readme:
+      app-link: "https://quizlet.com"
+      current-maintainers: [*spaghettiosareyummy]
   reddit:
     name: Reddit
     category: social