feat: add Eclipse Che devfile

[Copilot]

Adds a devfile.yaml to enable one-click Eclipse Che workspace creation with a pre-configured Java 8 / Maven environment.

Changes

• Component: quay.io/devfile/universal-developer-image:ubi8-latest container with 1.5 Gi memory, JDWP + Spring Boot ports declared
  • Port 8080 → public HTTP (Spring Boot)
  • Port 5005 → internal TCP (JDWP remote debug)
• Commands: build (mvn clean package -DskipTests), test (mvn test), run (mvn spring-boot:run, hot-reload), debug (JDWP agent on 5005)

schemaVersion: 2.2.0
components:
  - name: tools
    container:
      image: quay.io/devfile/universal-developer-image:ubi8-latest
      endpoints:
        - name: spring-boot
          targetPort: 8080
          exposure: public
        - name: debug
          targetPort: 5005
          exposure: internal

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