feat: remove transitions directives (#587)

# Motivation

For the same reasons as #586, we can remove the transitions directives.

# Changes

- Revert #573, #579 and #580

Author: peterpeterparker

src/lib/directives/transition.directives.ts

@@ -1,6 +1,5 @@
 export * from "./components";
 export * from "./constants/constants";
-export * from "./directives/transition.directives";
 export * from "./icons";
 export * from "./stores/busy.store";
 export * from "./stores/layout.store";