[DRAFT] Feat/middleware handling

[Sorikairox]

Description

Scoped middlewares registration with @Middleware decorator.
Global middleware registration with app.addGlobalMiddleware method.

Missing documentation for now

Issue Ticket Number

None

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Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

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Checklist:

• I have run deno lint AND deno fmt AND deno task test and got no
  errors.
• I have followed the contributing guidelines of this project as mentioned
  in CONTRIBUTING.md
• I have checked to ensure there aren't other open
  Pull Requests for the same
  update/change?
• I have performed a self-review of my own code
• I have made corresponding changes needed to the documentation