feat: Add Drupal OAuth service into new 'efservices' module

Resolves #35 (closed)

efservices/src/main/java/org/eclipsefoundation/efservices/api/models/DrupalOAuthData.java

+/*********************************************************************
+* Copyright (c) 2023 Eclipse Foundation.
+*
+* This program and the accompanying materials are made
+* available under the terms of the Eclipse Public License 2.0
+* which is available at https://www.eclipse.org/legal/epl-2.0/
+*
+* Author: Zachary Sabourin <zachary.sabourin@eclipse-foundation.org>
+*
+* SPDX-License-Identifier: EPL-2.0
+**********************************************************************/
+package org.eclipsefoundation.efservices.api.models;
+
+import javax.annotation.Nullable;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
+import com.google.auto.value.AutoValue;
+
+/**
+ * Contains information about a Drupal OAuth token. Used to validate incoming
+ * tokens.
+ */
+@AutoValue
+@JsonDeserialize(builder = AutoValue_DrupalOAuthData.Builder.class)
+public abstract class DrupalOAuthData {
+
+    public abstract String getClientId();
+
+    @Nullable
+    public abstract String getUserId();
+
+    public abstract String getAccessToken();
+
+    public abstract long getExpires();
+
+    public abstract String getScope();
+
+    public static Builder builder() {
+        return new AutoValue_DrupalOAuthData.Builder();
+    }
+
+    @AutoValue.Builder
+    @JsonPOJOBuilder(withPrefix = "set")
+    public abstract static class Builder {
+
+        public abstract Builder setClientId(String id);
+
+        public abstract Builder setUserId(@Nullable String id);
+
+        public abstract Builder setAccessToken(String token);
+
+        public abstract Builder setExpires(long expires);
+
+        public abstract Builder setScope(String scope);
+
+        public abstract DrupalOAuthData build();
+    }
+}
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