Move package settings to package instead of being tied to version (#37026)

Unties settings page from package version and adds button to delete the
package version
Settings page now allows for deletion of entire package and it's
versions as opposed to a single version

Adds an API endpoint to delete the entire package with all versions from
registry

fixes: https://github.com/go-gitea/gitea/issues/36904

Co-Authored-By: gemini-3-flash

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

routers/web/web.go

@@ -1071,14 +1071,15 @@ func registerWebRoutes(m *web.Router, webAuth *AuthMiddleware) {
 					m.Get("/versions", user.ListPackageVersions)
 					m.Group("/{version}", func() {
 						m.Get("", user.ViewPackageVersion)
+						m.Post("", reqPackageAccess(perm.AccessModeWrite), user.PackageVersionDelete)
 						m.Get("/{version_sub}", user.ViewPackageVersion)
 						m.Get("/files/{fileid}", user.DownloadPackageFile)
-						m.Group("/settings", func() {
-							m.Get("", user.PackageSettings)
-							m.Post("", web.Bind(forms.PackageSettingForm{}), user.PackageSettingsPost)
-						}, reqPackageAccess(perm.AccessModeWrite))
 					})
 				})
+				m.Group("/settings/{type}/{name}", func() {
+					m.Get("", user.PackageSettings)
+					m.Post("", web.Bind(forms.PackageSettingForm{}), user.PackageSettingsPost)
+				}, reqPackageAccess(perm.AccessModeWrite))
 			}, context.PackageAssignment(), reqPackageAccess(perm.AccessModeRead))
 		}