Driver: Add page about Groovy

[amotl]

About

What the title says.

Preview

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

[coderabbitai]

Walkthrough

Adds Groovy JDBC documentation: a new Groovy guide with Gradle example, connection/query snippets, Docker run instructions, and CrateDB Cloud SSL notes; also adds a Groovy driver card and toctree entry to the connect index. (≈45 words)

Changes

Cohort / File(s)	Summary
New Groovy documentation docs/connect/groovy/index.md	New Groovy JDBC guide showing two driver options (PostgreSQL and CrateDB JDBC), Groovy Sql code example, Gradle build.gradle snippet (Java 11 toolchain), Docker run instructions, run-with-Gradle example, and CrateDB Cloud sslmode=require guidance.
Updated drivers index docs/connect/index.md	Added Groovy card to the "Drivers by language" grid (image, sizing, styling tokens) and appended groovy/index to the drivers toctree.

Sequence Diagram(s)

(omitted — changes are documentation additions without multi-component control-flow impact)

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Driver: Add page about Kotlin #423 — Adds a language driver card and matching language page (same structural change pattern as this PR).
• Connect: Reorganize and clean up section #361 — Related edits to the Connect drivers pages and driver listing reorganization.
• Driver: Add page about Erlang #420 — Similar addition of a language driver card and new language-specific docs page.

Suggested labels

cross linking

Suggested reviewers

• seut
• matriv

Poem

🐰 I hopped in with a Gradle cheer,
Groovy queries ringing clear,
Drivers lined up, docs in bloom,
JDBC hops across the room! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Driver: Add page about Groovy' clearly describes the main change—adding new documentation content for Groovy connectivity.
Description check	✅ Passed	The description directly relates to the changeset by confirming that a new documentation page about Groovy is being added, matching the PR title and actual changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch groovy

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[matriv]

thx!