Release 0.9.0

[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: #48
Resolves: #50
Resolves: #51

Description of the changes being introduced by the pull request:
This is a quite big change, but mostly refactoring current codebase + fix for initial fastapi-mvc run command implementation.
Reasons and more info about refactor can be found in the issue. Lastly, fastapi-mvc.ini parser properties were extended.

[github-actions]

🚀 Deployed on https://620abf471adb8d8ae251fb14--fastapi-mvc.netlify.app

[codecov-commenter]

Codecov Report

Merging #52 (a15cd83) into master (f7b7036) will increase coverage by 0.30%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #52      +/-   ##
==========================================
+ Coverage   99.19%   99.49%   +0.30%     
==========================================
  Files          16       34      +18     
  Lines         371      591     +220     
==========================================
+ Hits          368      588     +220     
  Misses          3        3              

Impacted Files	Coverage Δ
fastapi_mvc/cli/cli.py	100.00% <100.00%> (ø)
fastapi_mvc/cli/new.py	100.00% <100.00%> (ø)
fastapi_mvc/cli/run.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/__init__.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/base.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/install_project.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/invoker.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/new_project.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/run_uvicorn.py	100.00% <100.00%> (ø)
fastapi_mvc/commands/verify_install.py	100.00% <100.00%> (ø)
... and 14 more

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