Feature | Extend Swagger Coverage for controller OAuth2SummitProposedScheduleApiController (#422)

* feat: Extend Swagger Coverage for controller `OAuth2SummitProposedScheduleApiController`

* chore: Add the correct security and x attributes and create security schema, fix path routes and change schema to be defined as requested

* feat: Add changes requested

* feat: Add changes requested

* chore: include PR requested changes

* chore: include PR requested changes

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Co-authored-by: Matias Perrone <github@matiasperrone.com>

Author: matiasperrone-exo