add http port exposure and ingress addition

[eywalker]

• add support for ingress and port exposure, along with basic authentication setup via OAuth2 server
• refine and reorganize statefulset template

[Copilot]

Pull Request Overview

This PR adds HTTP port exposure and ingress capabilities to the devenv-engine, enabling external HTTP access to development environments with optional OAuth2 authentication.

Key changes:

• Added ingress template with SSL termination and optional OAuth2 authentication
• Refactored statefulset template to improve container configuration and remove SSH key mounting
• Extended configuration to support hostname and authentication settings

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
internal/templates/renderer.go	Added "ingress" to the list of templates to render
internal/templates/files/statefulset.tmpl	Reorganized container configuration, removed SSH keys, updated security context
internal/templates/files/ingress.tmpl	New template for HTTP ingress with SSL and OAuth2 support
internal/templates/files/env-vars.tmpl	Added IS_ADMIN environment variable
internal/config/types.go	Added configuration fields for hostname and authentication

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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