Enabled Olm encryption

package.json

@@ -26,6 +26,8 @@
     "angular-auth-oidc-client": "^11.6.4",
     "matrix-js-sdk": "^9.9.0",
     "moment": "^2.29.1",
+    "olm": "https://packages.matrix.org/npm/olm/olm-3.2.1.tgz",
+    "path": "^0.12.7",
     "rxjs": "~6.6.6",
     "tslib": "^1.14.1",
     "zone.js": "~0.10.2"
@@ -49,5 +51,9 @@
     "ts-node": "~8.3.0",
     "tslint": "~6.1.0",
     "typescript": "^4.0.7"
+  },
+  "browser": {
+    "crypto": false,
+    "fs": false
   }
 }