Go: Add database source models for the github.com/couchbase/gocb package

[egregius313]

Adds database source models and relevant summaries for v1 and v2 of the github.com/couchbase/gocb package.

PR Overview

This PR adds new database source models and corresponding taint tests for both v1 and v2 of the github.com/couchbase/gocb package.

• Introduces database source model entries in the CodeQL YAML configuration.
• Adds taint analysis tests for v1 and v2 functions.
• Updates change notes to reflect the new source models.

Reviewed Changes

File	Description
go/ql/lib/ext/6github.com.couchbase.gocb.model.yml	New YAML entries for database source models are added for various gocb functions.
go/ql/test/library-tests/semmle/go/dataflow/flowsources/local/database/test_couchbase_gocb_v1.go	New taint flow tests for v1 functions.
go/ql/test/library-tests/semmle/go/dataflow/flowsources/local/database/test_couchbase_gocb_v2.go	New taint flow tests for v2 functions covering Cluster, Scope, Collection, TransactionAttemptContext, and ViewIndexManager.
go/ql/lib/change-notes/2025-03-03-couchbase-source-models.md	Change note reflecting the addition of the new source models.

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

go/ql/lib/ext/6github.com.couchbase.gocb.model.yml:12

• The YAML mapping for the new entry appears to have inconsistent indentation (e.g. 'data:' is indented differently than 'addsTo:'). Please verify that the YAML structure is correctly formatted to avoid any parsing issues.

- addsTo:

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[github-actions]

⚠️ The head of this PR and the base branch were compared for differences in the framework coverage reports. The generated reports are available in the artifacts of this workflow run. The differences will be picked up by the nightly job after the PR gets merged.

Click to show differences in coverage

go

Generated file changes for go

• Changes to framework-coverage-go.rst:

-    `Couchbase official client(gocb) <https://github.com/couchbase/gocb>`_,"``github.com/couchbase/gocb*``, ``gopkg.in/couchbase/gocb*``",,36,16
+    `Couchbase official client(gocb) <https://github.com/couchbase/gocb>`_,"``github.com/couchbase/gocb*``, ``gopkg.in/couchbase/gocb*``",44,94,16
-    `Couchbase unofficial client <http://www.github.com/couchbase/go-couchbase>`_,``github.com/couchbaselabs/gocb*``,,18,8
+    `Couchbase unofficial client <http://www.github.com/couchbase/go-couchbase>`_,``github.com/couchbaselabs/gocb*``,22,47,8
-    Totals,,494,958,1556
+    Totals,,560,1045,1556

• Changes to framework-coverage-go.csv:

- github.com/couchbase/gocb,8,,18,,,,,8,,,,,,,,,,,,,,,,,,18,
+ github.com/couchbase/gocb,8,22,47,,,,,8,,,,,,,,,,,,,22,,,,,47,
- github.com/couchbaselabs/gocb,8,,18,,,,,8,,,,,,,,,,,,,,,,,,18,
+ github.com/couchbaselabs/gocb,8,22,47,,,,,8,,,,,,,,,,,,,22,,,,,47,
- gopkg.in/couchbase/gocb,8,,18,,,,,8,,,,,,,,,,,,,,,,,,18,
+ gopkg.in/couchbase/gocb,8,22,47,,,,,8,,,,,,,,,,,,,22,,,,,47,

[owen-mc]

A few minor comments.