Update pack and unpack methods

[samwaseda]

Update of the pack and unpack methods. https://github.com/pyiron/pyiron_base/issues/775

• [x] pack includes the csv file inside the archive
• [x] pack filename is optional, uses ".tar.gz"
• [x] pack with same name as project should not delete the project
• [ ] pack selected jobs by id
• [x] pack all files in a job
• [x] pack from a different directory than where project is located
• [x] unpack method can be called as pr = Project(filename.tar.gz, unpack=True) or pr = Project(filename, unpack=True)
• [x] unpack should not nest project automatically
• [ ] unpack jobs into existing Project
• [ ] Update tests
• [ ] Update docstrings
• [ ] Update workflow template