feat(#18): add hooks to Serinus, remove guards and pipes

[francescovallone]

Description

Remove Guards and Pipes.
Add hooks system with local hooks and global hooks.
The hooks make the request lifecycle more accessible without reducing the performance.

Fixes #18

Type of change

Please delete options that are not relevant.

• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 30 lines in your changes missing coverage. Please review.

Project coverage is 87.01%. Comparing base (4404949) to head (7b69876).

Files	Patch %	Lines
...ages/serinus/lib/src/handlers/request_handler.dart	76.92%	6 Missing ⚠️
packages/serinus/lib/src/core/hook.dart	0.00%	5 Missing ⚠️
...ckages/serinus/lib/src/http/internal_response.dart	54.54%	5 Missing ⚠️
...ages/serinus/lib/src/contexts/request_context.dart	0.00%	4 Missing ⚠️
packages/serinus/lib/src/core/application.dart	0.00%	3 Missing ⚠️
...kages/serinus/lib/src/core/application_config.dart	0.00%	2 Missing ⚠️
...ackages/serinus/lib/src/http/internal_request.dart	83.33%	2 Missing ⚠️
packages/serinus/lib/src/handlers/handler.dart	85.71%	1 Missing ⚠️
packages/serinus/lib/src/http/request.dart	83.33%	1 Missing ⚠️
packages/serinus/lib/src/http/response.dart	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #25      +/-   ##
===========================================
- Coverage    87.12%   87.01%   -0.12%     
===========================================
  Files           70       65       -5     
  Lines         1989     1902      -87     
===========================================
- Hits          1733     1655      -78     
+ Misses         256      247       -9     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.