Fix the package recipe for consumers of libxrpl (#4631)

- "Rename" the type `LedgerInfo` to `LedgerHeader` (but leave an alias
  for `LedgerInfo` to not yet disturb existing uses). Put it in its own
  public header, named after itself, so that it is more easily found.
- Move the type `Fees` and NFT serialization functions into public
  (installed) headers.
- Compile the XRPL and gRPC protocol buffers directly into `libxrpl` and
  install their headers. Fix the Conan recipe to correctly export these
  types.

Addresses change (2) in
https://github.com/XRPLF/XRPL-Standards/discussions/121.

For context: This work supports Clio's dependence on libxrpl. Clio is
just an example consumer. These changes should benefit all current and
future consumers.

---------

Co-authored-by: cyan317 <120398799+cindyyan317@users.noreply.github.com>
Signed-off-by: Manoj Doshi <mdoshi@ripple.com>

Builds/CMake/RippledCore.cmake

@@ -85,6 +85,7 @@ target_sources (xrpl_core PRIVATE
   src/ripple/protocol/impl/STIssue.cpp
   src/ripple/protocol/impl/Keylet.cpp
   src/ripple/protocol/impl/LedgerFormats.cpp
+  src/ripple/protocol/impl/LedgerHeader.cpp
   src/ripple/protocol/impl/PublicKey.cpp
   src/ripple/protocol/impl/Quality.cpp
   src/ripple/protocol/impl/QualityFunction.cpp
@@ -116,6 +117,9 @@ target_sources (xrpl_core PRIVATE
   src/ripple/protocol/impl/UintTypes.cpp
   src/ripple/protocol/impl/digest.cpp
   src/ripple/protocol/impl/tokens.cpp
+  src/ripple/protocol/impl/NFTSyntheticSerializer.cpp
+  src/ripple/protocol/impl/NFTokenID.cpp
+  src/ripple/protocol/impl/NFTokenOfferID.cpp
   #[===============================[
     main sources:
       subdir: crypto
@@ -232,6 +236,7 @@ install (
     src/ripple/protocol/BuildInfo.h
     src/ripple/protocol/ErrorCodes.h
     src/ripple/protocol/Feature.h
+    src/ripple/protocol/Fees.h
     src/ripple/protocol/HashPrefix.h
     src/ripple/protocol/Indexes.h
     src/ripple/protocol/InnerObjectFormats.h
@@ -240,6 +245,10 @@ install (
     src/ripple/protocol/Keylet.h
     src/ripple/protocol/KnownFormats.h
     src/ripple/protocol/LedgerFormats.h
+    src/ripple/protocol/LedgerHeader.h
+    src/ripple/protocol/NFTSyntheticSerializer.h
+    src/ripple/protocol/NFTokenID.h
+    src/ripple/protocol/NFTokenOfferID.h
     src/ripple/protocol/Protocol.h
     src/ripple/protocol/PublicKey.h
     src/ripple/protocol/Quality.h
@@ -277,6 +286,9 @@ install (
     src/ripple/protocol/UintTypes.h
     src/ripple/protocol/digest.h
     src/ripple/protocol/jss.h
+    src/ripple/protocol/serialize.h
+    src/ripple/protocol/nft.h
+    src/ripple/protocol/nftPageMask.h
     src/ripple/protocol/tokens.h
   DESTINATION include/ripple/protocol)
 install (
@@ -296,6 +308,7 @@ install (
   DESTINATION include/ripple/beast/clock)
 install (
   FILES
+    src/ripple/beast/core/CurrentThreadName.h
     src/ripple/beast/core/LexicalCast.h
     src/ripple/beast/core/List.h
     src/ripple/beast/core/SemanticVersion.h
@@ -309,6 +322,14 @@ install (
 install (
   FILES src/ripple/beast/hash/impl/xxhash.h
   DESTINATION include/ripple/beast/hash/impl)
+install (
+  FILES
+  src/ripple/beast/net/IPAddress.h
+  src/ripple/beast/net/IPAddressConversion.h
+  src/ripple/beast/net/IPAddressV4.h
+  src/ripple/beast/net/IPAddressV6.h
+  src/ripple/beast/net/IPEndpoint.h
+  DESTINATION include/ripple/beast/net)
 install (
   FILES
     src/ripple/beast/rfc2616.h
@@ -714,9 +735,6 @@ target_sources (rippled PRIVATE
   src/ripple/rpc/impl/ShardVerificationScheduler.cpp
   src/ripple/rpc/impl/Status.cpp
   src/ripple/rpc/impl/TransactionSign.cpp
-  src/ripple/rpc/impl/NFTokenID.cpp
-  src/ripple/rpc/impl/NFTokenOfferID.cpp
-  src/ripple/rpc/impl/NFTSyntheticSerializer.cpp
   #[===============================[
      main sources:
        subdir: perflog