feat: add lending functionality to controller

- updates earn sdk to latest
- adds lending api methods and helpers
- adds lending contract methods and helpers
- adds multichain for pooled staking state

Author: nickewansmith

packages/earn-controller/package.json

@@ -47,10 +47,12 @@
     "since-latest-release": "../../scripts/since-latest-release.sh"
   },
   "dependencies": {
+    "@ethersproject/bignumber": "^5.7.0",
     "@ethersproject/providers": "^5.7.0",
     "@metamask/base-controller": "^8.0.1",
     "@metamask/controller-utils": "^11.9.0",
-    "@metamask/stake-sdk": "^1.0.0"
+    "@metamask/stake-sdk": "3.0.0",
+    "reselect": "^5.1.1"
   },
   "devDependencies": {
     "@metamask/accounts-controller": "^29.0.0",