fix: Add CLI entrypoint

[matthewfeickert]

• Add missing CLI API entrypoint.
• Amends PR feat: Use hatchling as the build backend  #349.

[matthewfeickert]

@BenGalewsky Sorry about that! 😞 This is back in now.

$ python -m pip install --upgrade -e .
$ servicex --help
                                                                                                                                                                                                            
 Usage: servicex [OPTIONS] COMMAND [ARGS]...                                                                                                                                                                
                                                                                                                                                                                                            
 ServiceX Client                                                                                                                                                                                            
                                                                                                                                                                                                            
╭─ Options ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ --version                                                                                                                                                                                                │
│ --install-completion          Install completion for the current shell.                                                                                                                                  │
│ --show-completion             Show completion for the current shell, to copy it or customize the installation.                                                                                           │
│ --help                        Show this message and exit.                                                                                                                                                │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
╭─ Commands ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ cache                         Sub-commands for creating and manipulating the local query cache                                                                                                           │
│ codegen                                                                                                                                                                                                  │
│ transforms                    Sub-commands for interacting with transforms.                                                                                                                              │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.89%. Comparing base (81cc526) to head (9cebe8a).

Additional details and impacted files

@@             Coverage Diff              @@
##           3.0_develop     #350   +/-   ##
============================================
  Coverage        79.89%   79.89%           
============================================
  Files               41       41           
  Lines             2253     2253           
============================================
  Hits              1800     1800           
  Misses             453      453           

Flag	Coverage Δ
unittests	79.89% <ø> (ø)

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[BenGalewsky]

Alls well then ends well