Migration to Grafana 12

[oborodin]

No description provided.

[Copilot]

Pull Request Overview

This pull request migrates the Grafana plugin from version 7.0.0+ to version 12.0.0+. The migration includes extensive build system modernization, dependency updates, and infrastructure changes.

• Updates Grafana dependencies to version 12.1.0 and removes the deprecated @grafana/toolkit in favor of webpack-based build system
• Restructures import statements to use the standard @grafana/data exports instead of deep imports
• Modernizes development tools including testing framework, linting, and CI workflows

Reviewed Changes

Copilot reviewed 35 out of 40 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/utils.ts	Updates imports to use standard exports from @grafana/data
src/datasource.ts	Updates imports to use standard exports from @grafana/data
src/plugin.json	Updates Grafana dependency requirement from >=7.0.0 to >=12.0.0
package.json	Major version bump and complete dependency overhaul for Grafana 12
.config/	Adds comprehensive build configuration files for webpack, jest, and development tools
CI/Workflows	Updates GitHub Actions to use newer versions and Node.js 20.x

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[hardcorewayx]

Don't have much about it, find nothing