Convert middleware to request handler

[xepozz]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	✔️

[what-the-diff]

PR Summary

• Changed interface for SwaggerJson class
  The SwaggerJson class now implements RequestHandlerInterface instead of MiddlewareInterface, to better align with its purpose.

• Renamed process() method to handle() and removed parameter
  The process() method was renamed to handle() and the second parameter $handler is removed, simplifying the function's signature.

[samdark]

1. What's the benefit?
2. It's still in the Middleware namespace.

[xepozz]

I'll move it outside of the middleware folder

[xepozz]

yiisoft/app-api#176
yiisoft/demo#591

[codecov]

Codecov Report

Patch coverage: 85.71% and project coverage change: -26.20% ⚠️

Comparison is base (aa3de81) 92.85% compared to head (0196008) 66.66%.

Additional details and impacted files

@@              Coverage Diff              @@
##             master      #79       +/-   ##
=============================================
- Coverage     92.85%   66.66%   -26.20%     
- Complexity       20       28        +8     
=============================================
  Files             5        7        +2     
  Lines            70      105       +35     
=============================================
+ Hits             65       70        +5     
- Misses            5       35       +30     

Files Changed	Coverage Δ
src/Middleware/SwaggerJson.php	33.33% <ø> (-66.67%)	⬇️
src/Middleware/SwaggerUi.php	13.33% <ø> (-86.67%)	⬇️
src/Action/SwaggerJson.php	75.00% <75.00%> (ø)
src/Action/SwaggerUi.php	100.00% <100.00%> (ø)

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[vjik]

Need fix readme

[samdark]

@xepozz readme should be adjusted. Afterwards, it's good to merge.

[xepozz]

Done

[vjik]

Need add configuration of new actions to di-web.php.