chore: allow uploading oleans for LeanHammer (leanprover-community#31327)

This is a preparatory PR that modifies Cache.lean to allow uploading oleans for LeanHammer, paving the way for future PRs to experiment with adding LeanHammer to mathlib. Requested from [#general > lean hammer install failing for 4.24 @ 💬](https://leanprover.zulipchat.com/#narrow/channel/113488-general/topic/lean.20hammer.20install.20failing.20for.204.2E24/near/554002277)

Author: JOSHCLUNE

Cache/IO.lean

@@ -43,7 +43,12 @@ def isPartOfMathlibCache (mod : Name) : Bool := #[
   `OpenAIClient,
   `Reap,
   -- Allow PRs to upload oleans for Canonical for testing.
-  `Canonical,].contains mod.getRoot
+  `Canonical,
+  -- Allow PRs to upload oleans for LeanHammer for testing.
+  `Duper,
+  `Auto,
+  `PremiseSelection,
+  `Hammer].contains mod.getRoot
 
 /-- Target directory for caching -/
 initialize CACHEDIR : FilePath ← do