Add missing model fields from Python reference

Feed: Added can_get_more_events, pumpkin, is_wizard_passed, headlines, today, next_revision
Label: Added description_formatted, image, links ([]Link), type
Landing: Added pumpkin, content_id
Pin: Added content_restrictions
Search: Added search_request_id, text, best, podcasts, podcast_episodes, clips, banner, page, per_page, misspell fields

Clip: Rewrote with all missing fields (version, player_id, uuid, thumbnail, track_ids, disclaimers, explicit, cover, content_restrictions)
Concert: Added datetime, afisha_url, city, place, address, content_rating, data_session_id, event_info

internal/models/pin.go

@@ -8,7 +8,7 @@ import (
 // Pin represents a pin from the Yandex Music API.
 type Pin struct {
 	BaseModel
-	ID JSONID `json:"id"`
+	ID          JSONID `json:"id"`
 	Title       string    `json:"title"`
 	Description string    `json:"description"`
 	Image       string    `json:"image"`
@@ -21,6 +21,7 @@ type Pin struct {
 	CreatedAt   string    `json:"created_at"`
 	ExpiresAt   string    `json:"expires_at"`
 	Active      bool      `json:"active"`
+	ContentRestrictions *ContentRestrictions `json:"content_restrictions"`
 }
 
 // DeJSON deserializes a Pin from JSON data.
@@ -59,6 +60,11 @@ func (p *Pin) DeJSON(data []byte, client ClientInterface) (Model, error) {
 	if v, ok := raw["active"]; ok {
 		json.Unmarshal(v, &pin.Active)
 	}
+	if v, ok := raw["content_restrictions"]; ok {
+		var cr ContentRestrictions
+		json.Unmarshal(v, &cr)
+		pin.ContentRestrictions = &cr
+	}
 
 	if v, ok := raw["track"]; ok {
 		var track Track