feat: add ora submission created event

[BryanttV]

Description

This PR adds an event that should be emitted when a submission is created in ORA

• Create a new data class:
  • ORASubmissionData
• Create corresponding signals to process the event:
  • ORA_SUBMISSION_CREATED

Supporting Information

These changes are based on those proposed in the following ADR

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[BryanttV]

Hi @mariajgrimaldi, the scheme was removed, thank you!

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