feat: Kubernetes manifests for DID IdP stack

[igorsatsyuk]

Summary

• add Kubernetes manifests for namespace, config/secrets templates, blockchain, backend services, and frontend
• add kustomization.yaml for local/dev cluster apply flow
• document Kubernetes deployment order in README
• mark Kubernetes manifests item as complete in ROADMAP

Validation

• backend: mvn -B verify
• blockchain:
  pm run coverage
• blockchain js deploy test:
  pm run coverage:js
• manifest rendering: kubectl kustomize deploy/kubernetes

Closes #32

[Copilot]

Pull request overview

This PR introduces Kubernetes deployment manifests for the DID IdP stack (Ganache blockchain + backend services + frontend), and updates project docs/roadmap to reflect Kubernetes support for local/dev clusters.

Changes:

• Added Kubernetes manifests for namespace, config/secrets templates, Ganache blockchain, backend services, and frontend, plus a kustomization file.
• Documented a Kubernetes-based local/dev deployment flow in the README.
• Marked the Kubernetes manifests milestone as complete in the roadmap.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
ROADMAP.md	Marks Kubernetes manifests work item as completed.
README.md	Adds Kubernetes local/dev deployment instructions (build images, apply resources, deploy contract, rollouts, port-forward).
deploy/kubernetes/namespace.yaml	Defines did-idp namespace and labeling.
deploy/kubernetes/configmap.yaml	Provides service/runtime configuration values via ConfigMap.
deploy/kubernetes/secret.template.yaml	Adds a Secret template for JWT/key material and blockchain settings.
deploy/kubernetes/blockchain.yaml	Deploys in-cluster Ganache and exposes RPC service.
deploy/kubernetes/services.yaml	Deploys identity/auth/resource services and frontend with probes and ClusterIP services.
deploy/kubernetes/kustomization.yaml	Aggregates Kubernetes resources for kustomize rendering/apply.

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Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

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