modify template structure

- add editorconfig & pug config
- add watch command
- update gitignore with local envs

.gitignore

@@ -78,6 +78,7 @@ web_modules/
 .env.test.local
 .env.production.local
 .env.local
+.envrc
 
 # parcel-bundler cache (https://parceljs.org/)
 .cache
@@ -129,5 +130,8 @@ dist
 .yarn/install-state.gz
 .pnp.*
 
+# ignore local variables
+/vars.*.pug
+
 # ignore local research stash
 _stash/