Use variadic argument in Group::middleware(), Group::prependMiddleware() and similar methods

[vjik]

• Group::middleware()
• Group::prependMiddleware()
• Route::middleware()
• Route::prependMiddleware()
• RouteCollector::middleware()
• RouteCollector::prependMiddleware()

[samdark]

Currently the syntax is:

Route::get('/api/bla-bla')
  ->middleware(Authenticate::class)
  ->middleware(FormatDataResponseAsHtml::class)

I'm not sure the following will be better:

Route::get('/api/bla-bla')
  ->middleware(
    Authenticate::class,
    FormatDataResponseAsHtml::class
  )

[vjik]

Current syntax will remain available. Variadic is optional.