feat(emacs): agda __cubical file template

modules/home/users/crumb/emacs/snippets/agda2-mode/__cubical

@@ -0,0 +1,19 @@
+# -*- mode: snippet -*-
+# name: __cubical
+# key: __cubical
+# --
+{-# OPTIONS --safe --guardedness --cubical --without-K #-}
+
+module ${1:Module} where
+
+open import Cubical.Foundations.Prelude
+-- open import Cubical.Data.Sigma
+-- open import Cubical.HITs.PropositionalTruncation
+-- open import Cubical.Foundations.Function
+-- open import Cubical.Foundations.Function
+
+
+private variable
+  ℓ ℓ' ℓ'' : Level
+
+$2