Fix controller generator creating duplicates entries in config/router.py

[rszamszur]

Checklist:

• Added tests for changed code where applicable.
• Documentation reflects the changes where applicable.
• Updated the CHANGELOG.md file with your changes.
• My PR is ready to review.

Resolves: #78

Description of the changes being introduced by the pull request:

[github-actions]

🚀 Deployed on https://62686247966b3103dc32e2d9--fastapi-mvc.netlify.app

[codecov-commenter]

Codecov Report

Merging #92 (f8850e8) into master (ea22c7a) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #92      +/-   ##
==========================================
- Coverage   99.62%   99.62%   -0.01%     
==========================================
  Files          39       39              
  Lines         808      797      -11     
==========================================
- Hits          805      794      -11     
  Misses          3        3              

Impacted Files	Coverage Δ
...r_name}}/{{cookiecutter.package_name}}/app/asgi.py	100.00% <ø> (ø)
...ter.package_name}}/app/controllers/api/v1/ready.py	100.00% <ø> (ø)
.../{{cookiecutter.package_name}}/app/models/ready.py	100.00% <ø> (ø)
...cookiecutter.package_name}}/app/models/response.py	100.00% <ø> (ø)
...ecutter.package_name}}/app/utils/aiohttp_client.py	100.00% <ø> (ø)
...}/{{cookiecutter.package_name}}/app/utils/redis.py	100.00% <ø> (ø)
...{cookiecutter.package_name}}/cli/commands/serve.py	100.00% <ø> (ø)
...}/{{cookiecutter.package_name}}/config/__init__.py	100.00% <ø> (ø)
...{cookiecutter.package_name}}/config/application.py	100.00% <ø> (ø)
...me}}/{{cookiecutter.package_name}}/config/redis.py	100.00% <ø> (ø)
... and 12 more

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