feat: support for proxy tiers (#290)

* feat: support for proxy tiers

* chore: bump crawlee to 3.9.0

* feat: tighter types for `tieredProxyConfig`

Author: barjin

package-lock.json

@@ -65,7 +65,7 @@
         "@typescript-eslint/eslint-plugin": "^7.0.0",
         "@typescript-eslint/parser": "^7.0.0",
         "commitlint": "^18.0.0",
-        "crawlee": "^3.8.2",
+        "crawlee": "^3.9.0",
         "eslint": "^8.54.0",
         "fs-extra": "^11.1.1",
         "gen-esm-wrapper": "^1.1.3",