meta: add badges to root dir README

Summary:
Sort of a QuickView.

Signed-off-by: Yongmin Hong <revi@omglol.email>

Test Plan: preview.

Reviewers: O1 revi & automations, revi

Reviewed By: O1 revi & automations, revi

Differential Revision: https://issuetracker.revi.xyz/D371

.github/workflows/build-container.yml

@@ -5,6 +5,9 @@ on:
     paths:
       - 'container/**'
       - '.github/workflows/build-container.yml'
+    tags-ignore:
+      - 'eslint-config@v*'
+      - 'prettier-config@v*'
   pull_request:
     paths:
       - 'container/**'

README.md

@@ -1,3 +1,11 @@
 # sandbox
 
 For things slightly more important than gist of pastebin, but not really worth their own repo lands here.
+
+## Badges
+
+<!-- prettier-ignore -->
+| Name | Badges |
+| ---- | ------ |
+| [npm (eslint)](https://github.com/revi/sandbox/tree/master/npm/eslint-config) | [![NPM Version](https://img.shields.io/npm/v/%40revi%2Feslint-config?logo=npm&cacheSeconds=600)](https://www.npmjs.com/package/@revi/eslint-config) [![GitHub License](https://img.shields.io/github/license/revi/sandbox?logo=apache&cacheSeconds=600)] |
+| [npm (prettier)](https://github.com/revi/sandbox/tree/master/npm/prettier-config) | [![NPM Version](https://img.shields.io/npm/v/%40revi%2Fprettier-config?logo=npm&cacheSeconds=600)](https://www.npmjs.com/package/@revi/prettier-config) [![GitHub License](https://img.shields.io/github/license/revi/sandbox?logo=apache&cacheSeconds=600)] |