Features from optional dependencies

uniffi implicit feature

Enables uniffi ^0.27.3

uniffi:

a multi-language bindings generator for rust

Affects builder::ArcedNodeBuilder, graph::ChannelInfo, graph::ChannelUpdateInfo, graph::NodeInfo, graph::NodeAnnouncementInfo, hex_utils::to_vec, payment::SendingParameters.max_total_routing_fee_msat, payment::MaxTotalRoutingFeeLimit