[do not merge] dsconfig: base

[jcolladokuri]

Summary

This PR adds the datasource configuration schema for the datasource. With the schema consumers such as llm agents, provisioning agents, etc will understand the shape and meta data about the datasource configuration.

Read more at

• https://github.com/grafana/dsconfig/tree/main/dsconfig
• https://github.com/grafana/dsconfig/blob/main/dsconfig/schema.md

[Copilot]

Pull request overview

This PR introduces a dsconfig.json schema for the Prometheus data source and adds supporting generated schema artifacts, enabling downstream consumers (including agents) to understand/configure the datasource fields in a consistent way.

Changes:

• Added pkg/schema/dsconfig.json plus generated schema artifacts (schema.gen.json, settings.gen.json, settings.examples.gen.json).
• Added a Go settings model and a conformance test using github.com/grafana/dsconfig/schema.
• Updated the frontend build to copy schema artifacts into the built plugin output, and bumped version/changelog.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
webpack.config.ts	Copies dsconfig/schema artifacts into the built plugin dist/ output.
pkg/schema/dsconfig.json	Adds the Prometheus dsconfig schema definition (fields/groups/relationships/instructions).
pkg/schema/schema.gen.json	Adds generated “combined” schema artifact (v0alpha1).
pkg/schema/settings.gen.json	Adds generated settings JSON schema artifact.
pkg/schema/settings.examples.gen.json	Adds generated settings examples artifact.
pkg/schema/models/settings.go	Adds Go model representing dsconfig settings fields (json tags used for conformance).
pkg/schema/dsconfig_test.go	Adds dsconfig conformance test wiring + artifact generation hook.
go.mod	Adds dsconfig schema dependencies and updates kube-openapi + sigs.k8s.io/yaml.
go.sum	Updates sums for newly introduced/updated Go dependencies.
package.json	Bumps root package version to 13.2.0.
packages/grafana-prometheus-datasource/package.json	Bumps workspace package version to 13.2.0.
CHANGELOG.md	Adds 13.2.0 entry describing the dsconfig schema/artifacts addition.

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[jcolladokuri]

a few nits, I think it would be nice if we could keep consistently either _ or . for target naming.

Since most of what we have in place works with . I'd lean towards keeping it that way, but open to other ideas!

[itsmylife]

It looks good to me. But I asked one question. I can approve once I got the answer. Also conflicts has to be resolved.

[itsmylife]

Also, could you please add documentation around schema, dsconfig etc? If I'd add a new settings option how I'd add that to schema, which command to run?