feat(spells): store last trigger by trigger key in KV [NET-511]

[justprosh]

Description

Store only the last trigger event from nox (connection pool and timer trigger events) in spell KV by trigger key.

Motivation

Previously, trigger events were stored in the Spell Mailbox, but it can be used by other spells and clients to pass data to the spell, and it became hard to distinguish trigger events from other events. We decided to store only the last trigger separately, so spell developers can easily find the event that triggered spell execution by adding trigger arg to spell signature:

import TriggerEvent from "@fluencelabs/spell/trigger.aqua"

func spell_main(trigger: TriggerEvent, init_arg1: string, ...):
    ...

Related Issue(s)

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Proposed Changes

• store nox trigger events in spell KV by trigger key

Screenshots (if applicable)

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Additional Notes

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Checklist

• The code follows the project's coding conventions and style guidelines.
• All tests related to the changes have passed successfully.
• Documentation has been updated to reflect the changes (if applicable).
• All new and existing unit tests have passed.
• I have self-reviewed my code and ensured its quality.
• I have added/updated necessary comments to aid understanding.

Reviewer Checklist

• Code has been reviewed for quality and adherence to guidelines.
• Tests have been reviewed and are sufficient to validate the changes.
• Documentation has been reviewed and is up to date.
• Any questions or concerns have been addressed.

[linear]

NET-511 Pass trigger event as an arg to spell

Put it in spell's KV by trigger key