`mustOptimize` to pass quietly if can't optimize

[yegor256]

Let's introduce a new parameter mustOptimize (false by default). If it's set to true, the OptimizeMojo must fail with an error if Docker is not available and phino is not available either.

If mustOptimize is set to false, we should quietly proceed (with a log message) if we can't optimize .class files, leaving them intact.

We should also pass quietly in the PullMojo and RmiMojo if this parameter is set to false.

[yegor256]

@volodya-lombrozo maybe you can help?

[volodya-lombrozo]

@yegor256 sure. Could you assign it to me, please?