Adapt kogito-runtimes/springboot integration tests to avoid usage of extensions flag for kogito-maven-plugin

[gitgabrio]

Currently, kogito-.maven-plugin requires usage of extensions flag (see here but this prevent its usage inside modules on the same repository.
Refactor the springboot/integration test poms to "recreate" the required lifecicle of kogito-maven-plugin, without the usage of the extensions flag.
This is a temporary workaround, to be removed after #1460 have been implemented

E.g.

<plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>${version.compiler.plugin}</version>
        <configuration>
          <release>${maven.compiler.release}</release>
        </configuration>
        <executions>
          <execution>
            <id>pre-kogito-compile</id>
            <phase>generate-sources</phase>
            <goals>
               <goal>compile</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
          <groupId>org.kie.kogito</groupId>
          <artifactId>kogito-maven-plugin</artifactId>
          <version>${project.version}</version>
          <executions>
            <execution>
              <id>kogito-generate-resources</id>
              <phase>generate-sources</phase>
              <goals>
                 <goal>generateModel</goal>
              </goals>
            </execution>
            <execution>
              <id>kogito-process-classes</id>
              <phase>process-classes</phase>
              <goals>
                 <goal>process-model-classes</goal>
              </goals>
            </execution>
          </executions>
      </plugin>
      <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>${version.compiler.plugin}</version>
          <configuration>
            <release>${maven.compiler.release}</release>
          </configuration>
      </plugin>

This is the lifecicle to recreate

maven-compiler-plugin         | compile                | default-compile               | compile              
kogito-maven-plugin           | compile                | default-generateModel         | generateModel        
maven-compiler-plugin         | compile                | default-compile-1             | compile              
kogito-maven-plugin           | process-classes        | default-process-model-classes | process-model-classes

@elguardian @baldimir @fjtirado