Rework delete org and rename org UI (#34762)

# What's the problem of the original implementation

Renaming organization will mix with organization's information change
make the operation difficult to keep consistent.

This PR created a danger zone like what's repository setting. It also
moved organization's `rename` and `delete` operations to this zone. The
original updating repository will not change the name any more.

This is also a step to extract the `updaterepository` function
completely.

Before:


![image](https://github.com/user-attachments/assets/d097dfdf-07be-4d79-8fcf-e78822515575)

![image](https://github.com/user-attachments/assets/42ee832c-cb44-41ec-9fe3-92a1c94747d2)

After:


![image](https://github.com/user-attachments/assets/f7700ed7-f104-4302-a924-09e118f24be3)

![image](https://github.com/user-attachments/assets/4c49952a-578e-4d14-bd01-4a68c9e02412)

![image](https://github.com/user-attachments/assets/814829d3-00fe-4e87-ae05-625c129170d2)

![image](https://github.com/user-attachments/assets/b067b263-c909-4b48-b23c-73481c32d350)

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

services/forms/org.go

@@ -36,7 +36,6 @@ func (f *CreateOrgForm) Validate(req *http.Request, errs binding.Errors) binding
 
 // UpdateOrgSettingForm form for updating organization settings
 type UpdateOrgSettingForm struct {
-	Name                      string `binding:"Required;Username;MaxSize(40)" locale:"org.org_name_holder"`
 	FullName                  string `binding:"MaxSize(100)"`
 	Email                     string `binding:"MaxSize(255)"`
 	Description               string `binding:"MaxSize(255)"`
@@ -53,6 +52,11 @@ func (f *UpdateOrgSettingForm) Validate(req *http.Request, errs binding.Errors)
 	return middleware.Validate(errs, ctx.Data, f, ctx.Locale)
 }
 
+type RenameOrgForm struct {
+	OrgName    string `binding:"Required"`
+	NewOrgName string `binding:"Required;Username;MaxSize(40)" locale:"org.org_name_holder"`
+}
+
 // ___________
 // \__    ___/___ _____    _____
 //   |    |_/ __ \\__  \  /     \