[MM-25646] Adds the permanent delete all users endpoint to the local API (#14903)

* [MM-25646] Adds the permanent delete all users endpoint to the local API

* Add a check to ensure that teams and channels are not deleted

* Fix linter

* Fix audit record name for consistency with method name

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/client4.go

@@ -1211,6 +1211,16 @@ func (c *Client4) DeleteUser(userId string) (bool, *Response) {
 	return CheckStatusOK(r), BuildResponse(r)
 }
 
+// PermanentDeleteAll permanently deletes all users in the system. This is a local only endpoint
+func (c *Client4) PermanentDeleteAllUsers() (bool, *Response) {
+	r, err := c.DoApiDelete(c.GetUsersRoute())
+	if err != nil {
+		return false, BuildErrorResponse(r, err)
+	}
+	defer closeBody(r)
+	return CheckStatusOK(r), BuildResponse(r)
+}
+
 // SendPasswordResetEmail will send a link for password resetting to a user with the
 // provided email.
 func (c *Client4) SendPasswordResetEmail(email string) (bool, *Response) {