codimd.extraEnvironmentVariablesFrom to support passing {configMap,secretKey}Ref as environment variables

[SamuAlfageme]

• This can be useful when passing secrets/configuration living on an existing Secret/ConfigMap

codimd:
  extraEnvironmentVariablesFrom:
    - name: ENV_FROM
      valueFrom:
        configMapKeyRef:
          name: configmap
          key: configmap_key
    - name: SECRET_ENV
      valueFrom:
        secretKeyRef:
          name: secret
          key: secret_key

• Also included artifacthub.io annotations to integrate changelogs and security scanning on ArtifactHub .Documentation