Add a general job scheduler

service/src/main/java/org/whispersystems/textsecuregcm/configuration/DynamoDbTables.java

@@ -67,6 +67,7 @@ public class DynamoDbTables {
   private final TableWithExpiration registrationRecovery;
   private final Table remoteConfig;
   private final Table reportMessage;
+  private final TableWithExpiration scheduledJobs;
   private final Table subscriptions;
   private final Table verificationSessions;
 
@@ -91,6 +92,7 @@ public class DynamoDbTables {
       @JsonProperty("registrationRecovery") final TableWithExpiration registrationRecovery,
       @JsonProperty("remoteConfig") final Table remoteConfig,
       @JsonProperty("reportMessage") final Table reportMessage,
+      @JsonProperty("scheduledJobs") final TableWithExpiration scheduledJobs,
       @JsonProperty("subscriptions") final Table subscriptions,
       @JsonProperty("verificationSessions") final Table verificationSessions) {
 
@@ -114,6 +116,7 @@ public class DynamoDbTables {
     this.registrationRecovery = registrationRecovery;
     this.remoteConfig = remoteConfig;
     this.reportMessage = reportMessage;
+    this.scheduledJobs = scheduledJobs;
     this.subscriptions = subscriptions;
     this.verificationSessions = verificationSessions;
   }
@@ -238,6 +241,12 @@ public class DynamoDbTables {
     return reportMessage;
   }
 
+  @NotNull
+  @Valid
+  public TableWithExpiration getScheduledJobs() {
+    return scheduledJobs;
+  }
+
   @NotNull
   @Valid
   public Table getSubscriptions() {