Replace beego/orm with dbx (#2693)

* Start migration to dbx package

* Fix annotations and bookmarks bindings

* Fix tests

* Fix more tests

* Remove remaining references to beego/orm

* Add PostScanner/PostMapper interfaces

* Fix importing SmartPlaylists

* Renaming

* More renaming

* Fix artist DB mapping

* Fix playlist updates

* Remove bookmarks at the end of the test

* Remove remaining `orm` struct tags

* Fix user timestamps DB access

* Fix smart playlist evaluated_at DB access

* Fix search3

model/radio.go

@@ -3,10 +3,10 @@ package model
 import "time"
 
 type Radio struct {
-	ID          string    `structs:"id"            json:"id" orm:"pk;column(id)"`
+	ID          string    `structs:"id"            json:"id"`
 	StreamUrl   string    `structs:"stream_url"    json:"streamUrl"`
 	Name        string    `structs:"name"          json:"name"`
-	HomePageUrl string    `structs:"home_page_url" json:"homePageUrl" orm:"column(home_page_url)"`
+	HomePageUrl string    `structs:"home_page_url" json:"homePageUrl"`
 	CreatedAt   time.Time `structs:"created_at"    json:"createdAt"`
 	UpdatedAt   time.Time `structs:"updated_at"    json:"updatedAt"`
 }