Make a simple command line tool for tilescope.

[enadeau]

The two command I made are

$ permscope list --help
usage: permscope list [-h]

List all the strategy pack available

optional arguments:
  -h, --help  show this help message and exit

and

$ permscope tree --help
usage: permscope tree [-h] basis strategy_pack

Search for a tree with for a given permutation class with a given strategy
pack.

positional arguments:
  basis          The basis of the permutation class. The permutation can be 1
                 or 0-based and are separated by an underscore
  strategy_pack  The strategy pack to run. The strategy defines the set of
                 strategy that will be used to expand the universe of
                 combinatorial classes.

optional arguments:
  -h, --help     show this help message and exit

Let me know your suggestion in order to improve the tool before we merge.