This PR introduces the following changes:
- **Engine Environment Configuration**: Adds support for specifying an
environment variables file for the engine via the `arcade dev` CLI
command.
- **Configuration File Handling**: Refactors configuration file handling
in the CLI launcher to generalize logic for locating configuration
files.
- **Tool Execution Logging**: Enhances logging in `BaseActor` to include
execution duration and adjusts logging levels for better visibility.
- **Enhanced Tool Exception Handling**: Improves exception handling in
`ToolExecutor` and updates the `@tool` decorator to ensure proper
propagation and handling of exceptions raised during tool execution.
