feat: add posts

backend/database/fields/medias.go

@@ -0,0 +1,18 @@
+package fields
+
+type MediaAsset struct {
+	Type MediaAssetType `json:"type"`
+	Hash string         `json:"hash"`
+}
+
+// swagger:enum MediaAssetType
+// ENUM(
+// Unknown = "unknown",
+// Poster = "poster",
+// Image = "image",
+// Video = "video",
+// Audio = "audio",
+// Document = "document",
+// Other = "other"
+// )
+type MediaAssetType string