debezium/dbz#1245 Add description field to connections API payload

[PDGGK]

Summary

Adds the description field to the connections API payload, consistent with all other resources (pipelines, sources, destinations, transforms, vaults) that already have this field.

Closes debezium/dbz#1245

Changes

Backend (Java/Quarkus):

• ConnectionEntity.java: Added description field with getter/setter
• Connection.java (Blaze-Persistence EntityView): Added getDescription()/setDescription()
• New Flyway migration V3.5.0__add_connection_description.sql: Adds description varchar(255) column to connection table

Frontend (TypeScript/React):

• apis.tsx: Added description?: string to Connection and ConnectionPayload types
• Connections.json: Updated mock data with description field

Tests:

• ConnectionResourceIT.java: Updated test payloads to include description, added assertions, added testCreateConnection_WithoutDescription to verify optionality

Design Decisions

• Description is optional (nullable), consistent with all other entities
• No REST endpoint changes needed — Blaze-Persistence and Jackson handle serialization automatically
• Column type varchar(255) matches existing description columns in other tables

[github-actions]

Hi @PDGGK, thanks for your contribution. Please prefix the commit message(s) with the debezium/dbz#xxx GitHub issue key.

[mfvitale]

@PDGGK Thanks for you first PR! Could you please sign-off you commits and format with debezium/dbz#xxx GitHub?

[Naros]

Hi @PDGGK your email addresses do not match on the commit sign-offs with what is expected, see
https://github.com/debezium/debezium-platform/actions/runs/23486964273?pr=309#summary-68651795864

[mfvitale]

@PDGGK Overall it LGTM.

@indraraj could you take a look to the FE part?

[kmos]

LGTM 🚀