feat(core): Diesel and domain model changes to support multiple outgoing webhooks

[swetasharma03]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

How did you test it?

Only domain and diesel model changes, hence no testing required.

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible

[semanticdiff-com]

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Changed Files

File	Status
crates/common_enums/src/enums.rs	0% smaller
crates/common_utils/src/id_type.rs	0% smaller
crates/common_utils/src/id_type/webhook_endpoint.rs	0% smaller
crates/diesel_models/src/business_profile.rs	0% smaller
crates/diesel_models/src/events.rs	0% smaller
crates/diesel_models/src/schema.rs	0% smaller
crates/diesel_models/src/schema_v2.rs	0% smaller
crates/router/src/core/webhooks/outgoing.rs	0% smaller
crates/router/src/core/webhooks/outgoing_v2.rs	0% smaller
crates/router/src/core/webhooks/webhook_events.rs	0% smaller
crates/router/src/db/events.rs	0% smaller
crates/router/src/types/domain/event.rs	0% smaller
crates/router/src/types/transformers.rs	0% smaller
crates/router/src/workflows/outgoing_webhook_retry.rs	0% smaller
migrations/2025-10-13-131518_add_webhook_endpoint_id_in_events/down.sql	Unsupported file format
migrations/2025-10-13-131518_add_webhook_endpoint_id_in_events/up.sql	Unsupported file format