* Fix rust-analyzer warnings
Fix some warnings that rust-analyzer emits due to enabling all features.
These are annoying when you try to list all warnings in the entire
workspace.
* Revert change to signing client
* Instead add nested feature
* imported libp2p to monorepo
* fixed vanilla ping example
* added libp2p client to workspace
* naively replaced dockerised client with the sdk
* moved libp2p code to sdk examples
* reduced number of dependencies required for libp2p example
* updated readmes
* added protobuf compiler to build dependencies
* added protoc dependency to readme for chat and ping examples
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Co-authored-by: mfahampshire <maxhampshire@pm.me>
Jędrzej Stuczyński