--with-config-override options to provide a config override via cli.

Is your feature request related to a problem? Please describe. Its easier to test with various configs.

Describe the solution you'd like spf --with-config-override 'debug=true' should enable debug irrrespective of config.toml

Describe alternatives you've considered Manually editing config.toml in each run

Additional context Example from rovr

➜  ~/Workspace/Other_proj/spf_forks/olegshestakov/testsuite git:(main) [8:50:15] rovr --help

 Usage: rovr [OPTIONS] [PATH]

 A post-modern terminal file explorer

╭─ Config ──────────────────────────────────────────────────────────────────────────╮
│ --mode           TEXT       Activate a preset mode defined in config (e.g.,       │
│                             'gui').                                               │
│ --with           TEXT       Enable a feature (e.g., 'plugins.bat').               │
│ --without        TEXT       Disable a feature (e.g., 'interface.tooltips').       │
│ --config-folder  DIRECTORY  Change the config folder location.                    │
╰───────────────────────────────────────────────────────────────────────────────────╯