feat(cli): add @coveo/search-token-server package

packages/search-token-server/.env.example

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+# Coveo related configuration
+COVEO_PLATFORM_HOSTNAME=<PLATFORM_HOSTNAME dev,qa,prod,hippa>
+# for example https://platform.cloud.coveo.com
+COVEO_API_KEY=<YOUR_COVEO_API_KEY_HERE>
+USER_EMAIL=<YOUR_EMAIL>
+
+# Optional variables
+# SEARCH_HUB=<YOUR_SEARCH_HUB>

packages/search-token-server/.gitignore

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+node_modules

packages/search-token-server/README.md

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+# Simple search token generation server
+
+## Setup environment
+
+Create the `.env` file at the root of this project using `.env.example` as starting point and make sure to replace all placeholder variables `<...>` by the proper information for your organization.
+
+For more info, https://docs.coveo.com/en/56/build-a-search-ui/search-token-authentication

packages/search-token-server/middlewares/searchToken.ts

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+import {NextFunction} from 'express';
+import {getSearchToken} from '../utils/cloudPlatformAPI';
+
+export function ensureTokenGenerated(req: any, res: any, next: NextFunction) {
+  const userIds = [process.env.USER_EMAIL!].map((user) => ({
+    name: user,
+    provider: 'Email Security Provider',
+  }));
+
+  getSearchToken({
+    hostname: process.env.COVEO_PLATFORM_HOSTNAME!,
+    apiKey: process.env.COVEO_API_KEY!,
+    searchHub: process.env.SEARCH_HUB,
+    userIds: userIds,
+  })
+    .then((data: any) => {
+      req.token = data.token;
+      next();
+    })
+    .catch((err: any) => {
+      next(err);
+    });
+}