Refactor storage content-type handling of ServeDirectURL (#36804)

* replace raw url.Values by *storage.ServeDirectOptions
* implement content-type in azblob
* implement content-disposition in azblob
* add tests for content types in response
* http.MethodPut for azure now allows implementing servedirect uploads

---------

Signed-off-by: ChristopherHX <christopher.homberger@web.de>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/storage/helper.go

@@ -30,7 +30,7 @@ func (s discardStorage) Delete(_ string) error {
 	return fmt.Errorf("%s", s)
 }
 
-func (s discardStorage) URL(_, _, _ string, _ url.Values) (*url.URL, error) {
+func (s discardStorage) ServeDirectURL(_, _, _ string, _ *ServeDirectOptions) (*url.URL, error) {
 	return nil, fmt.Errorf("%s", s)
 }