fix: Declare @nmfs-radfish/radfish package as an ESM module

Author: thgaskell

package.json

@@ -1,8 +1,8 @@
 {
   "description": "![test and build workflow](https://github.com/NMFS-RADFish/boilerplate/actions/workflows/run-tests.yml/badge.svg)",
   "workspaces": [
-    "./packages/radfish",
-    "./packages/react-radfish"
+    "packages/radfish",
+    "packages/react-radfish"
   ],
   "keywords": [],
   "author": "",

packages/radfish/package.json

@@ -1,6 +1,11 @@
 {
   "name": "@nmfs-radfish/radfish",
   "version": "1.1.1",
+  "type": "module",
+  "exports": {
+    ".": "./index.js",
+    "./storage": "./storage/index.js"
+  },
   "main": "index.js",
   "scripts": {
     "test": "jest"
@@ -22,4 +27,4 @@
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0"
   }
-}
+}