fix: set neverthrow and zod to be peer deps

Author: joshunrau

package.json

@@ -29,11 +29,13 @@
     "test": "vitest run",
     "test:coverage": "vitest run --coverage"
   },
-  "dependencies": {
+  "peerDependencies": {
     "neverthrow": "^8.2.0",
-    "type-fest": "^4.34.1",
     "zod": "^3.22.6"
   },
+  "dependencies": {
+    "type-fest": "^4.34.1"
+  },
   "devDependencies": {
     "@douglasneuroinformatics/eslint-config": "^5.3.1",
     "@douglasneuroinformatics/prettier-config": "^0.0.1",