refactor: split backend by context instead of type 'controllers/models/...'

app/core/constants/keys.ts

@@ -0,0 +1,19 @@
+const OPEN_SEARCH_KEY = 's';
+const ESCAPE_KEY = 'escape';
+
+const OPEN_CREATE_LINK_KEY = 'l';
+const OPEN_CREATE_COLLECTION_KEY = 'c';
+
+const ARROW_UP = 'ArrowUp';
+const ARROW_DOWN = 'ArrowDown';
+
+const KEYS = {
+	ARROW_DOWN,
+	ARROW_UP,
+	ESCAPE_KEY,
+	OPEN_CREATE_COLLECTION_KEY,
+	OPEN_CREATE_LINK_KEY,
+	OPEN_SEARCH_KEY,
+};
+
+export default KEYS;