Hooks-chaining alpha

This is a squash of 241 commits from https://github.com/XRPL-Labs/xrpld-hooks/tree/hooks-chaining
Ready for forward porting to rippled 1.8.3

src/ripple/protocol/impl/InnerObjectFormats.cpp

@@ -23,6 +23,17 @@ namespace ripple {
 
 InnerObjectFormats::InnerObjectFormats()
 {
+    add(sfEmitDetails.jsonName.c_str(),
+        sfEmitDetails.getCode(),
+        {
+            {sfEmitGeneration,  soeREQUIRED},
+            {sfEmitBurden,      soeREQUIRED},
+            {sfEmitParentTxnID, soeREQUIRED},
+            {sfEmitNonce,       soeREQUIRED},
+            {sfEmitCallback,    soeREQUIRED},
+            {sfEmitHookHash,    soeREQUIRED}
+        });
+
     add(sfSignerEntry.jsonName.c_str(),
         sfSignerEntry.getCode(),
         {
@@ -51,6 +62,60 @@ InnerObjectFormats::InnerObjectFormats()
             {sfPublicKey, soeREQUIRED},
             {sfFirstLedgerSequence, soeREQUIRED},
         });
+    
+    add(sfHookExecution.jsonName.c_str(),
+        sfHookExecution.getCode(),
+        {
+            {sfHookResult,              soeREQUIRED},
+            {sfHookHash,                soeREQUIRED},
+            {sfHookAccount,             soeREQUIRED},
+            {sfHookReturnCode,          soeREQUIRED},
+            {sfHookReturnString,        soeREQUIRED},
+            {sfHookInstructionCount,    soeREQUIRED},
+            {sfHookExecutionIndex,      soeREQUIRED},
+            {sfHookStateChangeCount,    soeREQUIRED},
+            {sfHookEmitCount,           soeREQUIRED}
+        });
+
+    add(sfHookDefinition.jsonName.c_str(),
+        sfHook.getCode(),
+        {
+            {sfCreateCode,      soeREQUIRED},
+            {sfHookNamespace,   soeREQUIRED},
+            {sfHookParameters,  soeREQUIRED},
+            {sfHookOn,          soeREQUIRED},
+            {sfHookApiVersion,  soeREQUIRED},
+            {sfFlags,           soeREQUIRED}
+        });
+    
+    add(sfHook.jsonName.c_str(),
+        sfHook.getCode(),
+        {
+            {sfHookHash,        soeOPTIONAL},
+            {sfCreateCode,      soeOPTIONAL},
+            {sfHookGrants,      soeOPTIONAL},
+            {sfHookNamespace,   soeOPTIONAL},
+            {sfHookParameters,  soeOPTIONAL},
+            {sfHookOn,          soeOPTIONAL},
+            {sfHookApiVersion,  soeOPTIONAL},
+            {sfFlags,           soeOPTIONAL}
+        });
+
+    add(sfHookGrant.jsonName.c_str(),
+        sfHookGrant.getCode(),
+        {
+            {sfHookHash,        soeREQUIRED},
+            {sfAuthorize,       soeOPTIONAL},
+            {sfFlags,           soeOPTIONAL}
+        });
+
+    add(sfHookParameter.jsonName.c_str(),
+        sfHookParameter.getCode(),
+        {
+            {sfHookParameterName,   soeREQUIRED},
+            {sfHookParameterValue,  soeREQUIRED}
+        });
+
 }
 
 InnerObjectFormats const&