[TypeSpecValidation] Implement "tsv --help"

### Repro
```
$ npx tsv --help
```

### Expected
Show help describing the tool and command-line options.

### Actual
```
node:internal/errors:478
ErrorCaptureStackTrace(err);
^

TypeError [ERR_PARSE_ARGS_UNKNOWN_OPTION]: Unknown option '--help'. To specify a positional argument
starting with a '-', place it at the end of the command after '--', as in '-- "--help"
```