Add web front-end and fix API issues

node_modules/rxjs/dist/esm/webSocket/index.js

@@ -0,0 +1,3 @@
+export { webSocket as webSocket } from '../internal/observable/dom/webSocket';
+export { WebSocketSubject } from '../internal/observable/dom/WebSocketSubject';
+//# sourceMappingURL=index.js.map

node_modules/rxjs/dist/esm/webSocket/index.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../../src/webSocket/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,SAAS,IAAI,SAAS,EAAE,MAAM,sCAAsC,CAAC;AAC9E,OAAO,EAAE,gBAAgB,EAA0B,MAAM,6CAA6C,CAAC"}