[Kiosk SDK] add @mysten/kiosk package (MystenLabs#11380)

## Description 

Adds the @mysten/kiosk package //  @damirka 

## Test Plan 

How did you test the new or updated feature?

---
If your changes are not user-facing and not a breaking change, you can
skip the following section. Otherwise, please indicate what changed, and
then add to the Release Notes section as highlighted during the release
process.

### Type of Change (Check all that apply)

- [ ] user-visible impact
- [ ] breaking change for a client SDKs
- [ ] breaking change for FNs (FN binary must upgrade)
- [ ] breaking change for validators or node operators (must upgrade
binaries)
- [ ] breaking change for on-chain data layout
- [ ] necessitate either a data wipe or data migration

### Release notes

adds @mysten/kiosk package to work with Kiosks and TransferPolicies

---------

Co-authored-by: Damir Shamanaev <[email protected]>
Co-authored-by: Jordan Gensler <[email protected]>

.changeset/beige-crabs-cheat.md

@@ -0,0 +1,5 @@
+---
+"@mysten/sui.js": patch
+---
+
+the event BCS data is a base64 string

.changeset/beige-donuts-eat.md

@@ -0,0 +1,5 @@
+---
+"@mysten/kiosk": major
+---
+
+Kiosk SDK for managing, querying and interacting with Kiosk and TransferPolicy objects

package.json

@@ -12,6 +12,7 @@
     "wallet-kit-site": "pnpm --filter wallet-kit-site",
     "sdk": "pnpm --filter ./sdk/typescript",
     "bcs": "pnpm --filter ./sdk/bcs",
+    "kiosk": "pnpm --filter ./sdk/kiosk",
     "changeset-version": "pnpm changeset version && pnpm sdk codegen:version"
   },
   "pnpm": {