Add link previews

Change-Id: I1792958844c18b4f4a65356dd5a07e3b2b39fcbc
diff --git a/server/package.json b/server/package.json
index 471079d..85f6d93 100644
--- a/server/package.json
+++ b/server/package.json
@@ -22,6 +22,8 @@
     "express-async-handler": "^1.2.0",
     "helmet": "^6.0.0",
     "jose": "^4.10.0",
+    "link-preview-js": "^3.0.4",
+    "linkifyjs": "^4.0.2",
     "loglevel": "^1.8.0",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.5.7",