Introduce dataobjects and or builders for Vert.x Web handlers

[tsegismont]

Review Vert.x Web handlers and determine which ones have several data params or callbacks.

These handlers should be reworked to provide a builder and/or a dataobject to simplify implementation.

[tsegismont]

Analyzed existing handlers and found these are good candidates

• CSPHandler
  • [x] builder
• CSRFHandler
  • [x] data object
• ErrorHandler skipped, just a couple of params only set in constructor
• FaviconHandler skipped, single param only set in constructor
• FormLoginHandler
  • [x] data object
• RedirectAuthHandler skipped, just a couple of params only set in constructor
• TemplateHandler
  • [x] remove setter, all params can be set in constructor
• BodyHandler
  • [x] data object
• APIKeyHandler skipped, custom logic
• AuthorizationHandler skipped
• ChainAuthHandler
  • [x] use a copy-on-write list for implementation (safer and more efficient)
• CorsHandler skipped, custom logic
• JWTAuthHandler skipped, custom logic
• LoggerHandler skipped, just a couple of params only set in constructor
• OAuth2AuthHandler skipped, custom logic
• OtpAuthHandler skipped, custom logic
• SessionHandler
  • [x] data object
• StaticHandler
  • [x] data object
• HealthCheckHandler skipped, not a good candidate

[vietj]

Too much breaking for vertx 5.0