Fix various problems around projects board view (#30696)

The previous implementation will start multiple POST requests from the
frontend when moving a column and another bug is moving the default
column will never be remembered in fact.

- [x] This PR will allow the default column to move to a non-first
position
- [x] And it also uses one request instead of multiple requests when
moving the columns
- [x] Use a star instead of a pin as the icon for setting the default
column action
- [x] Inserted new column will be append to the end
- [x] Fix #30701 the newly added issue will be append to the end of the
default column
- [x] Fix when deleting a column, all issues in it will be displayed
from UI but database records exist.
- [x] Add a limitation for columns in a project to 20. So the sorting
will not be overflow because it's int8.

---------

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit a303c973e0264dab45a787c4afa200e183e0d953)

Conflicts:
	routers/web/web.go
	e91733468ef726fc9365aa4820cdd5f2ddfdaa23 Add missing database transaction for new issue (#29490) was not cherry-picked
	services/issue/issue.go
	fe6792dff3 Enable/disable owner and repo projects independently (#28805) was not cherry-picked

models/db/engine.go

@@ -58,6 +58,7 @@ type Engine interface {
 	SumInt(bean any, columnName string) (res int64, err error)
 	Sync(...any) error
 	Select(string) *xorm.Session
+	SetExpr(string, any) *xorm.Session
 	NotIn(string, ...any) *xorm.Session
 	OrderBy(any, ...any) *xorm.Session
 	Exist(...any) (bool, error)