Update fields in source-connectors specifications: jdbc

[ycherniaiev]

What

Add title and description properties to each field in source-connectors specifications:
source-jdbc

How

Describe the solution

Recommended reading order

1. x.java
2. y.python

🚨 User Impact 🚨

Are there any breaking changes? What is the end result perceived by the user? If yes, please merge this PR with the 🚨🚨 emoji so changelog authors can further highlight this if needed.

Pre-merge Checklist

Expand the relevant checklist and delete the others.

Updating a connector

Community member or Airbyter

• Grant edit access to maintainers (instructions)
• Secrets in the connector's spec are annotated with airbyte_secret
• Unit & integration tests added and passing. Community members, please provide proof of success locally e.g: screenshot or copy-paste unit, integration, and acceptance test output. To run acceptance tests for a Python connector, follow instructions in the README. For java connectors run ./gradlew :airbyte-integrations:connectors:<name>:integrationTest.
• Code reviews completed
• Documentation updated
  • Connector's README.md
  • Connector's bootstrap.md. See description and examples
  • Changelog updated in docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
• PR name follows PR naming conventions

Airbyter

If this is a community PR, the Airbyte engineer reviewing this PR is responsible for the below items.

• Create a non-forked branch based on this PR and test the below items on it
• Build is successful
• Credentials added to Github CI. Instructions.
• /test connector=connectors/<name> command is passing.
• New Connector version released on Dockerhub by running the /publish command described here
• After the new connector version is published, connector version bumped in the seed directory as described here
• Seed specs have been re-generated by building the platform and committing the changes to the seed spec files, as described here

[ycherniaiev]

/test connector=connectors/source-jdbc

🕑 connectors/source-jdbc https://github.com/airbytehq/airbyte/actions/runs/1653058006
✅ connectors/source-jdbc https://github.com/airbytehq/airbyte/actions/runs/1653058006
No Python unittests run

[bazarnov]

/publish connector=connectors/source-jdbc

🕑 connectors/source-jdbc https://github.com/airbytehq/airbyte/actions/runs/1653309196
✅ connectors/source-jdbc https://github.com/airbytehq/airbyte/actions/runs/1653309196