feat: Support for Componentes v2 (#198)

* Support Componentes v2

* UnfurledMediaItemData require url

* ComponentData#media

* Add fields for Media Gallery items in Components

* ComponentData#accessory its single object not a list

* ComponentData#description can be null

* MediaGalleryItemData#description can be null

* more fields for UnfurledMediaItemData

* fix property for UnfurledMediaItemData#placeholderVersion

src/main/java/discord4j/discordjson/json/ComponentData.java

@@ -5,6 +5,7 @@
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import discord4j.discordjson.Id;
 import discord4j.discordjson.possible.Possible;
+import java.util.Optional;
 import org.immutables.value.Value;
 
 import java.util.List;
@@ -22,6 +23,8 @@ static ImmutableComponentData.Builder builder() {
 
     Possible<List<ComponentData>> components();
 
+    Possible<ComponentData> accessory();
+
     Possible<Integer> style();
 
     Possible<String> label();
@@ -67,4 +70,23 @@ static ImmutableComponentData.Builder builder() {
 
     @JsonProperty("sku_id")
     Possible<Id> skuId();
+
+    Possible<Integer> spacing();
+
+    Possible<Boolean> divider();
+
+    Possible<Boolean> spoiler();
+
+    @JsonProperty("accent_color")
+    Possible<Integer> accentColor();
+
+    Possible<Optional<String>> description();
+
+    Possible<String> content();
+
+    Possible<UnfurledMediaItemData> file();
+
+    Possible<UnfurledMediaItemData> media();
+
+    Possible<List<MediaGalleryItemData>> items();
 }

src/main/java/discord4j/discordjson/json/MediaGalleryItemData.java

@@ -0,0 +1,22 @@
+package discord4j.discordjson.json;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import discord4j.discordjson.possible.Possible;
+import java.util.Optional;
+import org.immutables.value.Value;
+
+@Value.Immutable
+@JsonSerialize(as = ImmutableMediaGalleryItemData.class)
+@JsonDeserialize(as = ImmutableMediaGalleryItemData.class)
+public interface MediaGalleryItemData {
+
+    static ImmutableMediaGalleryItemData.Builder builder() {
+        return ImmutableMediaGalleryItemData.builder();
+    }
+
+    UnfurledMediaItemData media();
+    Possible<Optional<String>> description();
+    Possible<Boolean> spoiler();
+
+}

src/main/java/discord4j/discordjson/json/UnfurledMediaItemData.java

@@ -0,0 +1,41 @@
+package discord4j.discordjson.json;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import discord4j.discordjson.possible.Possible;
+import java.util.Optional;
+import org.immutables.value.Value;
+
+@Value.Immutable
+@JsonSerialize(as = ImmutableUnfurledMediaItemData.class)
+@JsonDeserialize(as = ImmutableUnfurledMediaItemData.class)
+public interface UnfurledMediaItemData {
+
+    static ImmutableUnfurledMediaItemData.Builder builder() {
+        return ImmutableUnfurledMediaItemData.builder();
+    }
+
+    String url();
+
+    @JsonProperty("proxy_url")
+    Possible<String> proxyUrl();
+
+    Possible<Optional<Integer>> width();
+
+    Possible<Optional<Integer>> height();
+
+    Possible<Optional<String>> placeholder();
+
+    @JsonProperty("placeholder_version")
+    Possible<Optional<Integer>> placeholderVersion();
+
+    @JsonProperty("content_type")
+    Possible<Optional<String>> contentType();
+
+    @JsonProperty("loading_state")
+    Possible<Optional<Integer>> loadingState();
+
+    Possible<Integer> flags();
+
+}