refactor: strip Aeson from Types, remove Server.hs, fix Sis.hs exports, update deps

- Removed all Aeson instances from Types.hs
- Deleted Server.hs (Orb/WAI routing)
- Added Hyperbole form types (LoginForm, SignupForm, etc.)
- Removed Server from Sis.hs and cabal file
- Updated stack.yaml for Hyperbole dependency resolution
- Added local hyperbole copy with GHC 9.10 compat patches
- Types.hs, Database.hs, Auth.hs compile successfully

src/Sis.hs

@@ -5,5 +5,4 @@ module Sis (
 
 import Sis.Auth as X
 import Sis.Database as X
-import Sis.Server as X
 import Sis.Types as X