Add generated config wiki section

[absalonCRC]

Summary

• add a hidden --wiki-configuration / --wiki-config flag that emits the Configuration File wiki section from defaults_flag_in_config
• serialize enum defaults to JSON-safe values so the generated code block is valid JSON
• include the crytic-compile defaults that Slither already merges into its config defaults

Fixes #1155

Testing

• uv run pytest tests/unit/utils/test_command_line.py
• uv run ruff check slither/utils/command_line.py slither/__main__.py tests/unit/utils/test_command_line.py
• uv run python -m slither --wiki-configuration

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