Driver: Add page about Groovy

[amotl]

About

What the title says.

Preview

https://cratedb-guide--425.org.readthedocs.build/connect/groovy/

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📥 Commits

Reviewing files that changed from the base of the PR and between 7c47a0b and 80ec92f.

⛔ Files ignored due to path filters (1)

• docs/_assets/icon/groovy-logo.svg is excluded by !**/*.svg

📒 Files selected for processing (2)

• docs/connect/groovy/index.md (1 hunks)
• docs/connect/index.md (2 hunks)

Walkthrough

This PR adds Groovy driver documentation to the CrateDB connectivity guides. It creates a new Groovy/JDBC example page with Gradle build configuration and connection instructions, then updates the main connect index to display the new driver option in the drivers grid and toctree.

Changes

Cohort / File(s)	Summary
New Groovy Documentation docs/connect/groovy/index.md	New guide introducing Groovy-based JDBC connectivity to CrateDB using PostgreSQL driver, including Gradle build configuration, Docker setup, code examples, and CrateDB Cloud connection guidance.
Updated Driver Index docs/connect/index.md	Added Groovy driver card to the "Drivers by language" grid with image, styling, and links; expanded toctree to include groovy/index entry.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• Drivers: Fix broken links. Improve wording. #338: Updates to the docs/connect/index.md drivers grid and related driver listing content alignment.
• Connect: Reorganize and clean up section #361: Related changes to the docs/connect drivers area (index/toctree and driver cards reorganization).
• Connect: Migrate pages from crate-clients-tools, to be retired soon #221: Prior migration of docs/connect content with new language/driver pages and toctree updates.

Suggested labels

cross linking

Suggested reviewers

• seut
• matriv
• surister

Poem

🐰 A Groovy guide hops into place,
With Gradle builds and SQL grace,
PostgreSQL drivers in the fold,
New connections, stories told! ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The pull request title "Driver: Add page about Groovy" directly and clearly describes the main change in the changeset. The raw summary confirms that a new Groovy documentation page is being added to the connectivity guides (docs/connect/groovy/index.md) and the index file is updated to include the new Groovy driver card. The title is concise, specific, and avoids vague terminology. A developer scanning the repository history would immediately understand that this PR adds documentation for Groovy connectivity.
Description Check	✅ Passed	The pull request description is directly related to the changeset. While the description is minimal and includes the phrase "What the title says," it references the PR title which accurately describes the changes (adding a Groovy driver page), and provides a preview link to the newly added Groovy documentation. The description is not completely off-topic or unrelated to the changeset; it explicitly connects to the main objective of adding Groovy connectivity documentation.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

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