Feature/oicp

[fmandache]

OICP

[juherr]

Thanks a lot for your effort here! 🙌
At this stage, the PR is still a bit too large and contains several unrelated OICP changes, which makes it harder to review and merge.

One suggestion that could help streamline things: instead of maintaining models and controller mappings manually, you could generate them directly from the OpenAPI file provided by Hubject:
https://hubject.github.io/oicp-emp-2.3-api-doc/openapi.yaml

The following plugin configuration might be a good starting point:

<plugin>
        <groupId>org.openapitools</groupId>
        <artifactId>openapi-generator-maven-plugin</artifactId>
        <version>7.16.0</version>
        <executions>
          <execution>
            <id>generate-server</id>
            <goals>
              <goal>generate</goal>
            </goals>
            <configuration>
              <inputSpec>${project.basedir}/src/main/resources/OICP_EMP_2.3_API.yaml</inputSpec>
              <output>${project.build.directory}/generated-sources/oicp-emp-2.3</output>
              <generatorName>spring</generatorName>

              <apiPackage>de.rwth.idsg.steve.gateway.oicp.controller</apiPackage>
              <modelPackage>de.rwth.idsg.steve.gateway.oicp.model</modelPackage>

              <generateSupportingFiles>false</generateSupportingFiles>
              <skipValidateSpec>true</skipValidateSpec>

              <configOptions>
                <useSpringBoot3>true</useSpringBoot3>
                <documentationProvider>none</documentationProvider>
                <openApiNullable>false</openApiNullable>
                <interfaceOnly>true</interfaceOnly>
                <useTags>true</useTags>
                <skipDefaultInterface>true</skipDefaultInterface>
              </configOptions>
            </configuration>
          </execution>
        </executions>
      </plugin>

[juherr]

The mapping should follow the convention /oicp/charging/v21/operators/{operatorID}/authorize/start

See: https://hubject.github.io/oicp-emp-2.3-api-doc/#tag/eRoamingAuthorization/operation/eRoamingAuthorizeStart_v2.1