Add --config (-c) CLI option to override config file path

[igancev]

Problem

The work:report command always loads configuration from the hardcoded default ~/.config/work-reporter/config.yaml (see src/Config/YamlConfigProvider.php). There is no way to point the CLI at a different config file.

Proposal

Add a --config / -c option to bin/console work:report accepting a path to a YAML config file. When provided, YamlConfigProvider should be instantiated with this path instead of the default.

Acceptance criteria

• bin/console work:report --config /path/to/config.yaml loads the given file.
• Short form -c works identically.
• Without the option, current default behavior is preserved.