♻️ Refactor workspace thumbails (again)

We probably need a counter of number of types this
code was refactored hehe

frontend/src/app/main.cljs

@@ -15,7 +15,6 @@
    [app.main.data.websocket :as ws]
    [app.main.errors]
    [app.main.features :as feat]
-   [app.main.imposters :as imp]
    [app.main.rasterizer :as thr]
    [app.main.store :as st]
    [app.main.ui :as ui]
@@ -114,7 +113,6 @@
   (theme/init! cf/themes)
   (cur/init-styles)
   (thr/init!)
-  (imp/init!)
   (init-ui)
   (st/emit! (initialize)))