User: Support sort query param for user and org user, search endpoints (#75229)

* User: Add sort option to user search

* Switch to an approach that uses the dashboard search options

* Cable user sort on the org endpoint

* Alias user table with u in org store

* Add test and cover orgs/:orgID/users/search endpoint

* Add test to userimpl store

* Simplify the store_test with sortopts.ParseSortQueryParam

* Account for PR feedback

* Positive check

* Update docs

* Update docs

* Switch to ErrOrFallback

Co-authored-by: Karl Persson <kalle.persson@grafana.com>

---------

Co-authored-by: Karl Persson <kalle.persson@grafana.com>

pkg/services/user/model.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/grafana/grafana/pkg/services/auth/identity"
+	"github.com/grafana/grafana/pkg/services/search/model"
 )
 
 type HelpFlags1 uint64
@@ -112,6 +113,7 @@ type SearchUsersQuery struct {
 	Page         int
 	Limit        int
 	AuthModule   string
+	SortOpts     []model.SortOption
 	Filters      []Filter
 
 	IsDisabled *bool