Update available MIMEtypes

Our current list is quite small:

scala-js-dom/dom/src/main/scala-3/org/scalajs/dom/MIMEType.scala

Lines 5 to 15 in 21d6bad

    
           opaque type MIMEType <: String = String 
        
           object MIMEType { 
        
             val `text/html`: MIMEType = "text/html" 
        
             val `text/xml`: MIMEType = "text/xml" 
        
             val `application/xml`: MIMEType = "application/xml" 
        
             val `application/xhtml+xml`: MIMEType = 
        
               "application/xhtml+xml" 
        
             val `image/svg+xml`: MIMEType = "image/svg+xml" 
        
           }

For common MIME types I've found this: https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types

I'm not sure if this is a worthwhile endeavour. We can never have a complete list, and it can become a PITA to maintain. Maybe we should just use String, and deprecate this.

Fair enough, typescript does the same somewhat

https://github.com/microsoft/TypeScript/blob/7d1cc88a8cbdf8aa847a7f2a7d4bfeb89c8dde15/lib/lib.dom.d.ts#L9796

Actually that appears to be a different API 😅

https://developer.mozilla.org/en-US/docs/Web/API/Navigator/mimeTypes

oops, but you are still right tho!

There is no "will fix by deprecating it" label :P!

	opaque type MIMEType <: String = String

	object MIMEType {
	val `text/html`: MIMEType = "text/html"
	val `text/xml`: MIMEType = "text/xml"
	val `application/xml`: MIMEType = "application/xml"

	val `application/xhtml+xml`: MIMEType =
	"application/xhtml+xml"
	val `image/svg+xml`: MIMEType = "image/svg+xml"
	}