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