Bump version to 0.16.5 - stable release with tool result arrays

Bump version to 0.16.2-beta.1 in package.json

0.16.4

0.16.3

0.16.2

0.16.1

0.16.1-beta.1

0.15.3

Version 0.15.2: Fixed Claude 3.7 Sonnet reasoning format

Update package.json and pnpm-lock.yaml to include new dependency 'ai'…

… and update versions for '@ai-sdk/provider' and '@ai-sdk/provider-utils'. Add new files for playground text and Vercel integration, and modify schemas to support cache_enabled property in messages.