Enable Basic Auth for testing purposes

[andreaTP]

Depends on: Apicurio/apicurio-common-app-components#155

[apicurio-bot]

Thank you for creating a pull request!

Pinging @EricWittmann to respond or triage.

[EricWittmann]

LGTM - just a couple of minor comments.

[andreaTP]

This should be ready for review, you can test the final situation with a couple of pre-built container images:
Configure and run the backend using env variables:

sudo docker run --rm -it \
    -p 8080:8080 \
    -e QUARKUS_OIDC_TENANT_ENABLED=false \
    -e QUARKUS_HTTP_AUTH_BASIC=true \
    -e APICURIO_AUTH_ROLE_BASED_AUTHORIZATION=true \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_PLAIN_TEXT=true \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_USERS_admin=admin \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_USERS_developer=developer \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_USERS_readonly=readonly \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_ROLES_admin=sr-admin \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_ROLES_developer=sr-developer \
    -e QUARKUS_SECURITY_USERS_EMBEDDED_ROLES_readonly=sr-readonly \
    docker.io/andreatp/registry-basic-auth:latest

now you can run the UI:

docker run --rm -it -p 8888:8080 docker.io/andreatp/apicurio-registry-ui-basic-auth:latest

and now you can use the UI at http://locahost:8888

[paoloantinori]

update: this has been validated, functionality-wise, on a Slack thread by @kevinboone