Update ready-to-use templates and provide goals for all pre-defined commands

[slemeur]

With the work we did on Intelligent command, we have introduce command's goals.

We need to update all the templates so that each command get properly configured with a goal.

https://github.com/eclipse/che/blob/bdac9ec5c373f9919d56ce49cf9d0b49459766ca/ide/che-core-ide-templates/src/main/resources/samples.json#L23

We also need to split the command into multi-lines, so when we opened it in the command editor, it is possible to see the whole command on multi-lines (instead of a single line that you have to scroll horizontally to read).

[slemeur]

Fixed by #4319 and #4324