Add vortex / voice client.

package.json

@@ -35,6 +35,7 @@
     "@styled-icons/simple-icons": "^10.33.0",
     "@traptitech/markdown-it-katex": "^3.4.3",
     "@traptitech/markdown-it-spoiler": "^1.1.6",
+    "@types/lodash.defaultsdeep": "^4.6.6",
     "@types/lodash.isequal": "^4.5.5",
     "@types/markdown-it": "^12.0.2",
     "@types/node": "^15.12.4",
@@ -55,11 +56,13 @@
     "highlight.js": "^11.0.1",
     "idb": "^6.1.2",
     "localforage": "^1.9.0",
+    "lodash.defaultsdeep": "^4.6.1",
     "lodash.isequal": "^4.5.0",
     "markdown-it": "^12.0.6",
     "markdown-it-emoji": "^2.0.0",
     "markdown-it-sub": "^1.0.0",
     "markdown-it-sup": "^1.0.0",
+    "mediasoup-client": "^3.6.33",
     "preact-context-menu": "^0.1.5",
     "preact-i18n": "^2.4.0-preactx",
     "prettier": "^2.3.1",