🚀 [Feature]: Support for application/problem+json

[arielsrv]

Feature Description

Helpers should have support for application/problem+json RFC7807

const (
	MIMETextXML                = "text/xml"
	MIMETextHTML               = "text/html"
	MIMETextPlain              = "text/plain"
	MIMETextJavaScript         = "text/javascript"
	MIMEApplicationXML         = "application/xml"
	MIMEApplicationJSON        = "application/json"
        // New!
	MIMEApplicationProblemJSON = "application/problem+json" 
	// Deprecated: use MIMETextJavaScript instead
	MIMEApplicationJavaScript = "application/javascript"
	MIMEApplicationForm       = "application/x-www-form-urlencoded"
	MIMEOctetStream           = "application/octet-stream"
	MIMEMultipartForm         = "multipart/form-data"

	MIMETextXMLCharsetUTF8                = "text/xml; charset=utf-8"
	MIMETextHTMLCharsetUTF8               = "text/html; charset=utf-8"
	MIMETextPlainCharsetUTF8              = "text/plain; charset=utf-8"
	MIMETextJavaScriptCharsetUTF8         = "text/javascript; charset=utf-8"
	MIMEApplicationXMLCharsetUTF8         = "application/xml; charset=utf-8"
	MIMEApplicationJSONCharsetUTF8        = "application/json; charset=utf-8"
	// New!
        MIMEApplicationProblemJSONCharsetUTF8 = "application/problem+json; charset=utf-8"
	// Deprecated: use MIMETextJavaScriptCharsetUTF8 instead
	MIMEApplicationJavaScriptCharsetUTF8 = "application/javascript; charset=utf-8"
)

Additional Context (optional)

No response

Code Snippet (optional)

package main

import "github.com/gofiber/fiber/v2"
import "log"

func main() {
  app := fiber.New()

  // An example to describe the feature

  log.Fatal(app.Listen(":3000"))
}

Checklist:

• I agree to follow Fiber's Code of Conduct.
• I have checked for existing issues that describe my suggestion prior to opening this one.
• I understand that improperly formatted feature requests may be closed without explanation.

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