add option to set commands

[jburel]

Default command is build but other can be set for example build publishToMavenLocal

See

• https://github.com/jburel/omero-model/actions/runs/385672366
• https://github.com/jburel/omero-model/actions/runs/385604093

[sbesson]

From https://github.com/search?l=YAML&q=org%3Aome+gradlew&type=Code, commands seem to be mostly using one of publishToMavenLocal, build, test . Having some flexibility in the template makes sense.

Does gradle_commands handle the scenario where two targets are invoked e.g.publishToMavenLocal and test?

[jburel]

I have opted to use build by default since it will also run the test command
if you pass publishToMavenLocal test both commands will be run.

https://github.com/jburel/omero-model/actions/runs/385672366 ran for example build and publishToMavenLocal