Add script for finding block closest to given date

Useful for manual grant cycle management.

package-lock.json

@@ -3620,6 +3620,15 @@
         }
       }
     },
+    "ethereum-block-by-date": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/ethereum-block-by-date/-/ethereum-block-by-date-1.4.0.tgz",
+      "integrity": "sha512-3D+6esxU9bQDyFev9/9C6+Wqpb+HdSyeKnAhktIZXOQjgPdGRc4zwr/FdrgMfrJlB9Ee4cG9psu7eCgYQ3szaA==",
+      "dev": true,
+      "requires": {
+        "moment": "^2.29.1"
+      }
+    },
     "ethereum-common": {
       "version": "0.0.18",
       "resolved": "https://registry.npmjs.org/ethereum-common/-/ethereum-common-0.0.18.tgz",
@@ -6040,6 +6049,12 @@
       "integrity": "sha512-Yp4o3/ZA15wsXqJTT+R+9w2AYIkD1i80Lds47wDbuUhOvQvm+O2EfjFZSz0pMgZZSPHRhGxgcd2+GL4+jZMtdw==",
       "dev": true
     },
+    "moment": {
+      "version": "2.29.1",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.29.1.tgz",
+      "integrity": "sha512-kHmoybcPV8Sqy59DwNDY3Jefr64lK/by/da0ViFcuA4DH0vQg5Q6Ze5VimxkfQNSC+Mls/Kx53s7TjP1RhFEDQ==",
+      "dev": true
+    },
     "ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -9470,7 +9485,7 @@
           "dev": true
         },
         "websocket": {
-          "version": "github:web3-js/WebSocket-Node#905deb4812572b344f5801f8c9ce8bb02799d82e",
+          "version": "github:web3-js/WebSocket-Node#ef5ea2f41daf4a2113b80c9223df884b4d56c400",
           "from": "github:web3-js/WebSocket-Node#polyfill/globalThis",
           "dev": true,
           "requires": {
@@ -9916,4 +9931,4 @@
       }
     }
   }
-}
+}