Now default to ManagedSingleton instead of Loki singleton

Also updated doxygen docs

More work on ManagedSingleton

Reworked to be a pheonix singleton, will re-initialise after destroy, will recreate a new instance. Updated unit tests. Updated Doxygen comments.

Updated doxygenb comments related to new message pool

Version bump and regenerated docs

Added support for MessagePack

The ASIO based network classes can now serialize and deserialize network messages using MessagePack. MessagePack 7.0.0 is included with Core

Improved memory allocations in TcpConnection class

Reduced allocations/reallocations, better handling and recovery from oversized messages. Updated doxygen docs.

updated doxygen

Added flatbuffers support

ASIO network classes now support (de)serialising messages using Google's flatbuffers. Tweaks public API of network classes to accommodate this change. Added new unit tests for flatbuffer usage. Updated build scripts accordingly. ALso updated doxygen docs

Update ASIO classes to use std::string_view and std::span

The library rework has improved the ASIO classes' public interfaces to utilize std::string_view and std::span<const char> for better flexibility in argument handling.

Merge branch 'master' of https://github.com/dac1976/CoreLibrary