feat: added karmada compatibility and scraper

[smyja]

https://www.cncf.io/projects/karmada/
https://github.com/karmada-io/karmada?tab=readme-ov-file#kubernetes-compatibility

Test Plan

Checklist

• If required, I have updated the Plural documentation accordingly.
• I have added tests to cover my changes.
• I have added a meaningful title and summary to convey the impact of this PR to a user.

Plural Flow: console

[greptile-apps]

Greptile Overview

Greptile Summary

Adds support for Karmada (a Kubernetes multi-cluster management system) to the compatibility tracking system. The PR includes a new Python scraper that parses the Karmada README markdown table to extract Kubernetes version compatibility data, and generates compatibility YAML files with three initial versions (1.14.0, 1.15.0, 1.16.0) along with their supported Kubernetes versions and container images.

• New scraper at utils/compatibility/scrapers/karmada.py handles markdown table parsing with regex-based version extraction
• Compatibility data includes Kubernetes support ranges (e.g., v1.16.0 supports K8s 1.25-1.34)
• Chart versions and container images are automatically extracted from Helm repository
• Registered in manifest for automated compatibility tracking

Confidence Score: 5/5

• This PR is safe to merge with no issues found
• The implementation follows existing patterns for compatibility scrapers, uses standard library functions correctly, and the generated YAML data is well-formed and consistent with the repository's data structure
• No files require special attention

Important Files Changed

Filename	Overview
utils/compatibility/scrapers/karmada.py	Added new scraper for Karmada compatibility matrix parsing from README markdown table
static/compatibilities/karmada.yaml	Added Karmada compatibility data with 3 versions (1.14.0-1.16.0) and Kubernetes support matrix
static/compatibilities/manifest.yaml	Registered karmada in the compatibility manifest list
static/compatibilities.yaml	Added consolidated Karmada compatibility entries with metadata and image references