Is there a way to pass extra arguments to the command in a key/value array?

Hi there, love the tool so far,

my edge case is

```
"openapi-generator:generate": {
"command": "yarn openapi-generator-cli generate --global-property models --global-property supportingFiles=models.ts --additional-properties=enumPropertyNaming=UPPERCASE --additional-properties=useTags=true -g typescript-node -i backend-for-frontend.yaml -t .openapi-generator/typescript-node -o src/main/ts/generated --enable-post-process-file --inline-schema-name-mappings findInfosDetails_200_response=IndexData,findLogs_200_response=LogsData,findInfosSummary_200_response=SummaryData"
},
```

looking into breaking that down I would consider something like this:

```
"command-args": [['global-property':'...'], ['o', 'src/main/ts/generated']
```

there I mixed `--` and `-` maybe they need to separated.

Is there something like this? If not would that be interesting for the project?