[SL-2096] feat: fetch playback url & remove sentry

[jahed04368]

• Added an API route to fetch playback URL for episodes & movies
• Removed sentry from the reference app as it breaks the usage of API routes with serverless-nextjs.
• Related Skylark PR: https://github.com/ostmodern/skylark/pull/379

• Feature

Jira

https://ostmodern.atlassian.net/browse/SL-2096

Self-review

• Changes self-reviewed

Practical Tests Performed (Author)

• < Fill this in or "None" >

Practical Tests Performed (Reviewer)

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Automated Testing

• Appropriate unit/regression/integration tests
• Tests for negative cases

[github-actions]

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[james-wallis]

Also please remove useServerlessTraceTarget from packages/infra/bin/infra.ts.

It was added in #5 (comment) for Senty support and also seems to break API routes.

[james-wallis]

Nice work on this. Need to change the skylark deploy showcase workflow to have these new credentials (we can pair this):

cognito-aws-region: ${{ secrets.NEXT_PUBLIC_COGNITO_AWS_REGION }}
          cognito-client-id: ${{ secrets.NEXT_PUBLIC_COGNITO_CLIENT_ID }}
          cognito-user-pool-id: ${{ secrets.NEXT_PUBLIC_COGNITO_USER_POOL_ID }}
          cognito-identity-pool-id: ${{ secrets.NEXT_PUBLIC_COGNITO_IDENTITY_POOL_ID }}
          cognito-email: ${{ secrets.COGNITO_EMAIL }}
          cognito-password: ${{ secrets.COGNITO_PASSWORD }}
          ```