Add password reset Java object (#2765)

A future PR will add the actions that save and use this object. That
future PR will also require loading RegistrarPoc objects given the
registrar ID, hence the change in that class.

db/src/main/resources/sql/schema/db-schema.sql.generated

@@ -562,6 +562,17 @@
         primary key (package_promotion_id)
     );
 
+    create table "PasswordResetRequest" (
+        verification_code text not null,
+        destination_email text not null,
+        fulfillment_time timestamp(6) with time zone,
+        registrar_id text not null,
+        request_time timestamp(6) with time zone not null,
+        requester text not null,
+        type text not null check (type in ('EPP','REGISTRY_LOCK')),
+        primary key (verification_code)
+    );
+
     create table "PollMessage" (
         type text not null,
         poll_message_id bigint not null,