zed: set tab width

.zed/settings.json

@@ -0,0 +1,8 @@
+// Folder-specific settings
+//
+// For a full list of overridable settings, and general information on folder-specific settings,
+// see the documentation: https://zed.dev/docs/configuring-zed#settings-files
+{
+  "tab_size": 8,
+  "hard_tabs": false
+}