add package.json files for each component

[timomayer]

in the package.json add a custom part:

"biotope": {
    "componentName": "blabla",
    "componentVariants": ["fullsize", "blub"],
    "type": [element|component|structuralComponent],
    "allowedInGrid": [12, 8, 4],
    "allowedNested": ["componentX"] 
}

even if we not useall of that infos in the first styleguide version, lets think about what we maybe need in the near future.

[jurekbarth]

@timomayer @luke-m maybe we could go for something like this: https://bitsrc.io/ or at least look at their solutions