feat(D-01): add ComponentType enum with stub component classes

src/main/java/com/tiedup/remake/v2/bondage/component/ComponentType.java

@@ -0,0 +1,38 @@
+package com.tiedup.remake.v2.bondage.component;
+
+import com.google.gson.JsonObject;
+import java.util.function.Function;
+import org.jetbrains.annotations.Nullable;
+
+public enum ComponentType {
+    LOCKABLE("lockable", LockableComponent::fromJson),
+    RESISTANCE("resistance", ResistanceComponent::fromJson),
+    GAGGING("gagging", GaggingComponent::fromJson);
+
+    private final String jsonKey;
+    private final Function<JsonObject, IItemComponent> factory;
+
+    ComponentType(
+        String jsonKey,
+        Function<JsonObject, IItemComponent> factory
+    ) {
+        this.jsonKey = jsonKey;
+        this.factory = factory;
+    }
+
+    public String getJsonKey() {
+        return jsonKey;
+    }
+
+    public IItemComponent create(JsonObject config) {
+        return factory.apply(config);
+    }
+
+    @Nullable
+    public static ComponentType fromKey(String key) {
+        for (ComponentType type : values()) {
+            if (type.jsonKey.equals(key)) return type;
+        }
+        return null;
+    }
+}

src/main/java/com/tiedup/remake/v2/bondage/component/GaggingComponent.java

@@ -0,0 +1,12 @@
+package com.tiedup.remake.v2.bondage.component;
+
+import com.google.gson.JsonObject;
+
+public class GaggingComponent implements IItemComponent {
+
+    private GaggingComponent() {}
+
+    public static IItemComponent fromJson(JsonObject config) {
+        return new GaggingComponent();
+    }
+}

src/main/java/com/tiedup/remake/v2/bondage/component/LockableComponent.java

@@ -0,0 +1,12 @@
+package com.tiedup.remake.v2.bondage.component;
+
+import com.google.gson.JsonObject;
+
+public class LockableComponent implements IItemComponent {
+
+    private LockableComponent() {}
+
+    public static IItemComponent fromJson(JsonObject config) {
+        return new LockableComponent();
+    }
+}

src/main/java/com/tiedup/remake/v2/bondage/component/ResistanceComponent.java

@@ -0,0 +1,12 @@
+package com.tiedup.remake.v2.bondage.component;
+
+import com.google.gson.JsonObject;
+
+public class ResistanceComponent implements IItemComponent {
+
+    private ResistanceComponent() {}
+
+    public static IItemComponent fromJson(JsonObject config) {
+        return new ResistanceComponent();
+    }
+}