* add features to `server_definitions`
* clang-format
* Update RPCCall.cpp
* only return features without params
* clang-format
* include features in hashed value
* clang-format
* rework features addition to server_defintions to be cached at flag ledgers
* fix clang, duplicate hash key
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Co-authored-by: Richard Holland <richard.holland@starstone.co.nz>