chore: update version number for client-api-gateway (#618)

Refs: #617

Author: trivikr

clients/client-api-gateway/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@aws-sdk/client-api-gateway",
   "description": "@aws-sdk/client-api-gateway client",
-  "version": "1.0.0",
+  "version": "0.1.0-preview.1",
   "scripts": {
     "clean": "npm run remove-definitions && npm run remove-dist && npm run remove-js && npm run remove-maps",
     "build-documentation": "npm run clean && typedoc ./",
@@ -73,4 +73,4 @@
     "url": "https://aws.amazon.com/javascript/"
   },
   "license": "Apache-2.0"
-}
+}