Simplify Commands Calls

[threeal]

This pull request simplifies commands calls as follows:

• Use prepack in replacement of build command (prepack will be called before calling pack).
• Use check in replacement of format, lint, and sort commands.

This pull request also introduces the following changes:

• Ignore package.tgz using the .gitignore file.
• Modify Check Changes step with Check Packages step in the Build workflow.
• Adjust commands dependencies in the Nx configuration accordingly.

It closes #178.