Revert "deprecate embedded browser (#12163)"

This reverts commit 736d8cbac4.

Bring contrib files for older contributions

browser/README.md

@@ -0,0 +1,103 @@
+# MinIO File Browser
+
+``MinIO Browser`` provides minimal set of UI to manage buckets and objects on ``minio`` server.
+
+
+## Installation
+
+### Install node
+```sh
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
+exec -l $SHELL
+nvm install stable
+```
+
+### Install node dependencies
+```sh
+npm install
+```
+
+## Generating Assets
+
+> NOTE: if you are not part of MinIO organization please do not run this yourself and submit in a PR. Static assets in PRs are allowed only for authorized users.
+
+```sh
+npm run release
+```
+
+This generates `release` in the current directory.
+
+
+## Run MinIO Browser with live reload
+
+### Run MinIO Browser with live reload
+
+```sh
+npm run dev
+```
+
+Open [http://localhost:8080/minio/](http://localhost:8080/minio/) in your browser to play with the application.
+
+### Run MinIO Browser with live reload on custom port
+
+Edit `browser/webpack.config.js`
+
+```diff
+diff --git a/browser/webpack.config.js b/browser/webpack.config.js
+index 3ccdaba..9496c56 100644
+--- a/browser/webpack.config.js
++++ b/browser/webpack.config.js
+@@ -58,6 +58,7 @@ var exports = {
+     historyApiFallback: {
+       index: '/minio/'
+     },
++    port: 8888,
+     proxy: {
+       '/minio/webrpc': {
+         target: 'http://localhost:9000',
+@@ -97,7 +98,7 @@ var exports = {
+ if (process.env.NODE_ENV === 'dev') {
+   exports.entry = [
+     'webpack/hot/dev-server',
+-    'webpack-dev-server/client?http://localhost:8080',
++    'webpack-dev-server/client?http://localhost:8888',
+     path.resolve(__dirname, 'app/index.js')
+   ]
+ }
+```
+
+```sh
+npm run dev
+```
+
+Open [http://localhost:8888/minio/](http://localhost:8888/minio/) in your browser to play with the application.
+
+### Run MinIO Browser with live reload on any IP
+
+Edit `browser/webpack.config.js`
+
+```diff
+diff --git a/browser/webpack.config.js b/browser/webpack.config.js
+index 8bdbba53..139f6049 100644
+--- a/browser/webpack.config.js
++++ b/browser/webpack.config.js
+@@ -71,6 +71,7 @@ var exports = {
+     historyApiFallback: {
+       index: '/minio/'
+     },
++    host: '0.0.0.0',
+     proxy: {
+       '/minio/webrpc': {
+         target: 'http://localhost:9000',
+```
+
+```sh
+npm run dev
+```
+
+Open [http://IP:8080/minio/](http://IP:8080/minio/) in your browser to play with the application.
+
+
+## Run tests
+
+    npm run test