Enhance logs

[kamilsa]

Improved more readable logs:

[Copilot]

Pull request overview

This PR enhances the logging system throughout the codebase by improving log messages with emojis for better readability, adjusting log levels for more appropriate verbosity, refactoring the logging configuration system to support CLI-based log level overrides, and adding logger support to the State Transition Function (STF).

Key changes:

• Refactored logging configuration to load from a unified default config file and support CLI-based log level overrides via the --log flag
• Added logger to STF and updated all instantiations
• Enhanced log messages with emojis and more detailed context (peer IDs, validator IDs, hex-formatted hashes)
• Adjusted log levels: moved verbose operational logs (slot starts, intervals, vote production) from INFO to DEBUG while keeping important state changes at INFO

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/unit/blockchain/state_transition_function_test.cpp	Updated STF constructor call to include logger parameter
src/modules/networking/networking.cpp	Enhanced networking logs with emojis, peer info, and hex hash formatting; moved detailed block receive logs from INFO to DEBUG
src/log/formatters/block_index_ref.hpp	Changed default BlockIndexRef formatter to long_form for more detailed output
src/executable/lean_node.cpp	Reordered initialization to call step2 before logging setup, enabling CLI log options to be processed before logger configuration
src/blockchain/state_transition_function.hpp	Added logger member variable to STF class
src/blockchain/state_transition_function.cpp	Updated STF constructor to accept and initialize logger
src/blockchain/fork_choice.cpp	Extensive logging enhancements including emojis, validator node IDs, hex-formatted hashes, and adjusted log levels for slot/interval messages
src/app/impl/timeline_impl.cpp	Added slot start logging and removed redundant next slot logging
src/app/impl/chain_spec_impl.cpp	Removed verbose bootnode addition logging
src/app/default_logging_yaml.cpp.in	Removed old template file for logging-only configuration
src/app/default_config.hpp	Renamed function from defaultLoggingYaml() to defaultConfigYaml() to reflect broader scope
src/app/configurator.cpp	Refactored getLoggingConfig() to support CLI-based log level overrides and load from unified default config
src/app/CMakeLists.txt	Updated build to generate default_config.cpp from full config.yaml instead of just logging config
example/config.yaml	Added blockchain logging configuration with trace level for fork_choice

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[turuslan]

May use println

Suggested change

	std::cerr
	<< "+===============================================================+\n"
	<< fmt::format(" CHAIN STATUS: Current Slot: {} | Head Slot: {} \n",
	msg->slot,
	head.slot)
	fmt::println(std::cerr, "+===============================================================+");
	fmt::println(std::cerr, " CHAIN STATUS: Current Slot: {} | Head Slot: {}", msg->slot, head.slot);

[xDimon]

How about to make special sink and to log that soralog?