Add a parallel compute setting to the setting ID enum. (#194)

Stellar-contract-config-setting.x

@@ -32,7 +32,7 @@ struct ConfigSettingContractParallelComputeV0
     // threads used and instead only defines the minimum number
     // of physical threads that a tier-1 validator has to support
     // in order to not fall out of sync with the network.
-    int64 ledgerMaxParallelThreads;
+    uint32 ledgerMaxParallelThreads;
 };
 
 // Ledger access settings for contracts.
@@ -263,7 +263,8 @@ enum ConfigSettingID
     CONFIG_SETTING_STATE_ARCHIVAL = 10,
     CONFIG_SETTING_CONTRACT_EXECUTION_LANES = 11,
     CONFIG_SETTING_BUCKETLIST_SIZE_WINDOW = 12,
-    CONFIG_SETTING_EVICTION_ITERATOR = 13
+    CONFIG_SETTING_EVICTION_ITERATOR = 13,
+    CONFIG_SETTING_CONTRACT_PARALLEL_COMPUTE_V0 = 14
 };
 
 union ConfigSettingEntry switch (ConfigSettingID configSettingID)
@@ -296,5 +297,7 @@ case CONFIG_SETTING_BUCKETLIST_SIZE_WINDOW:
     uint64 bucketListSizeWindow<>;
 case CONFIG_SETTING_EVICTION_ITERATOR:
     EvictionIterator evictionIterator;
+case CONFIG_SETTING_CONTRACT_PARALLEL_COMPUTE_V0:
+    ConfigSettingContractParallelComputeV0 contractParallelCompute;
 };
 }