IO-3092 basic URL signing and image/pdf/video thumb generation.

server/routes/mediaRoutes.js

@@ -1,6 +1,10 @@
 const express = require("express");
 const router = express.Router();
 const { createSignedUploadURL, downloadFiles, renameKeys, deleteFiles } = require("../media/media");
+const {
+  generateSignedUploadUrls,
+  getThumbnailUrls
+} = require("../media/imgprox-media");
 const validateFirebaseIdTokenMiddleware = require("../middleware/validateFirebaseIdTokenMiddleware");
 
 router.use(validateFirebaseIdTokenMiddleware);
@@ -10,4 +14,7 @@ router.post("/download", downloadFiles);
 router.post("/rename", renameKeys);
 router.post("/delete", deleteFiles);
 
+router.post("/proxy/sign", generateSignedUploadUrls);
+router.post("/proxy/get", getThumbnailUrls);
+
 module.exports = router;