Add CLI command to list all codemodders

[browniebroke]

Codemodders are listed as a table using the rich package

Fixes #75

[codecov]

Codecov Report

Merging #156 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #156   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           19        19           
  Lines          547       585   +38     
=========================================
+ Hits           547       585   +38     

Impacted Files	Coverage Δ
django_codemod/visitors/core.py	100.00% <ø> (ø)
django_codemod/visitors/decorators.py	100.00% <ø> (ø)
django_codemod/visitors/encoding.py	100.00% <ø> (ø)
django_codemod/visitors/html.py	100.00% <ø> (ø)
django_codemod/visitors/http.py	100.00% <ø> (ø)
django_codemod/visitors/lru_cache.py	100.00% <ø> (ø)
django_codemod/visitors/os_utils.py	100.00% <ø> (ø)
django_codemod/visitors/shortcuts.py	100.00% <ø> (ø)
django_codemod/visitors/translations.py	100.00% <ø> (ø)
django_codemod/visitors/urls.py	100.00% <ø> (ø)
... and 4 more

---

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[sourcery-ai]

Sourcery Code Quality Report (beta)

Merging this PR leaves code quality unchanged.

Quality metrics	Before	After	Change
Complexity	1.27	1.27	0.00
Method Length	37.88	37.90	0.02 🔴
Quality	8.97	8.97	0.00

Other metrics	Before	After	Change
Lines	998	1072	74

Changed files	Quality Before	Quality After	Quality Change
django_codemod/cli.py	8.66	8.77	0.11 🔵
django_codemod/visitors/admin.py	8.56	8.56	0.00
django_codemod/visitors/base.py	9.33	9.32	-0.01 🔴
django_codemod/visitors/core.py	9.48	9.48	0.00
django_codemod/visitors/decorators.py	9.12	9.12	0.00
django_codemod/visitors/encoding.py	8.73	8.73	0.00
django_codemod/visitors/html.py	9.48	9.48	0.00
django_codemod/visitors/http.py	8.08	8.08	0.00
django_codemod/visitors/lru_cache.py	9.48	9.48	0.00
django_codemod/visitors/models.py	8.42	8.42	0.00
django_codemod/visitors/os_utils.py	9.48	9.48	0.00
django_codemod/visitors/shortcuts.py	9.60	9.60	0.00
django_codemod/visitors/translations.py	8.08	8.08	0.00
django_codemod/visitors/urls.py	9.09	9.09	0.00
tests/test_cli.py	9.12	9.11	-0.01 🔴

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Overall	Recommendation
django_codemod/visitors/models.py	ModelsPermalinkTransformer.leave_ImportFrom	21	178.88	4.45	Split out functionality
django_codemod/visitors/admin.py	InlineHasAddPermissionsTransformer.leave_ImportFrom	16	171.86	4.97	Split out functionality

Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

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