[FEATURE] Public configuration files can lead to password leakage

```
type %APPDATA%\TinyRDM\connections.yaml
```
Suggest using a configurable home directory from  %APPDATA%\TinyRDM\conf_path.yaml Or other path.
BTW, Use default directory (%APPDATA%\TinyRDM\ and other) when default empty value in conf_path.yaml(Or other file).