[misc] cleanup .dockerignore and .gitignore files (#25312)

- Remove settings ignore, they are inconsistent and break local prettier
- Remove .dockerignore files, only root ignore file is used
- Move .idea/.run/*.swp/coverage to root
- Remove .npmrc entries, we are no longer writing the rc file
- Remove node_modules/.DS_Store, is contained in root
- Remove cruft

GitOrigin-RevId: 3025fd5acaef343312f55149466c638e759a6e1f

libraries/redis-wrapper/.dockerignore

@@ -1 +0,0 @@
-node_modules/

libraries/redis-wrapper/.gitignore

@@ -1,13 +0,0 @@
-**.swp
-
-app.js
-app/js/
-test/unit/js/
-public/build/
-
-node_modules/
-
-/public/js/chat.js
-plato/
-
-.npmrc