feat: introduce task aliases

[vpa1977]

The task format is now

tasks:
  task-name: single-arg

or

tasks:
  task-name:
   - arg1
   - arg2 ..
   - argN

This allows to run maven plugins that require some prerequisite goals or chain several gradle tasks.

Now we can call

devpack-for-spring plugins rockcraft create-rock

for both Maven and Gradle build system regardless of the underlying plugin commands.

[vpa1977]

CI is playing up, job not being picked up:

/gradlew build
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended

[Incubating] Problems report is available at: file:///home/vladimirp/git/devpack-for-spring-cli/build/reports/problems/problems-report.html

Deprecated Gradle features were used in this build, making it incompatible with Gradle 10.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/9.4.1/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

BUILD SUCCESSFUL in 4m 16s
14 actionable tasks: 9 executed, 5 up-to-date