Separated code blocks and added linking for testing directory

[ryankfu]

What

This change separates difficult to read ./gradlew commands that were inline as well as separating bullet points that is more human readable when on a new line

How

Using the markdown documentation to make shell scripts easier to read with individual code blocks. Also added in comments to explain what the code does. For instance -x test builds Airbyte without running tests which can be really useful for saving time in the build process (referenced from internal Engineer New Hire docs)

Recommended reading order

1. gradle-cheatsheet.md

🚨 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.

No user impact, this will help make this portion of the Airbyte docs more readable ideally

Pre-merge Checklist

Expand the relevant checklist and delete the others.

New Connector

Community member or Airbyter

• Community member? 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
  • docs/integrations/<source or destination>/<name>.md including changelog. See changelog example
  • docs/integrations/README.md
  • airbyte-integrations/builds.md
• 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
• If new credentials are required for use in CI, add them to GSM. Instructions.
• /test connector=connectors/<name> command is passing
• New Connector version released on Dockerhub by running the /publish command described here
• After the connector is published, connector added to connector index 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

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
• If new credentials are required for use in CI, add them to GSM. Instructions.
• /test connector=connectors/<name> command is passing
• New Connector version released on Dockerhub and connector version bumped by running the /publish command described here

Connector Generator

• Issue acceptance criteria met
• PR name follows PR naming conventions
• If adding a new generator, add it to the list of scaffold modules being tested
• The generator test modules (all connectors with -scaffold in their name) have been updated with the latest scaffold by running ./gradlew :airbyte-integrations:connector-templates:generator:testScaffoldTemplates then checking in your changes
• Documentation which references the generator is updated as needed

Tests

Unit

Put your unit tests output here.

Integration

Put your integration tests output here.

Acceptance

Put your acceptance tests output here.

[sherifnada]

technically in markdown there needs to be an empty line between the bullet list and the paragraph before it I think?

Suggested change

	1. The tech stacks are very different. The Platform is almost entirely Java. Because of differing needs around separating environments, the Platform build can be optimized separately from the Connectors one.
	1. The tech stacks are very different. The Platform is almost entirely Java. Because of differing needs around separating environments, the Platform build can be optimized separately from the Connectors one.

[ryankfu]

Unless somehow the markdown viewer on IntelliJ is incorrect I don't think there needs to be an empty line between bulleted list and paragraph

Based on this bulleted list tutorial it doesn't seem like a empty line is neccesary