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/landing.go

@@ -8,13 +8,15 @@ import (
 // Landing represents a landing page from the Yandex Music API.
 type Landing struct {
 	BaseModel
-	ID JSONID `json:"id"`
+	ID          JSONID `json:"id"`
 	Title       string         `json:"title"`
 	Description string         `json:"description"`
 	CoverURI    string         `json:"cover_uri"`
 	Type        string         `json:"type"`
 	Blocks      []LandingBlock `json:"blocks"`
 	Available   bool           `json:"available"`
+	Pumpkin     bool           `json:"pumpkin"`
+	ContentID   string         `json:"content_id"`
 }
 
 // DeJSON deserializes a Landing from JSON data.
@@ -44,6 +46,12 @@ func (l *Landing) DeJSON(data []byte, c ClientInterface) (Model, error) {
 	if v, ok := raw["available"]; ok {
 		json.Unmarshal(v, &landing.Available)
 	}
+	if v, ok := raw["pumpkin"]; ok {
+		json.Unmarshal(v, &landing.Pumpkin)
+	}
+	if v, ok := raw["content_id"]; ok {
+		json.Unmarshal(v, &landing.ContentID)
+	}
 
 	if v, ok := raw["blocks"]; ok {
 		var blocks []LandingBlock