Specify column width for Likert component

### Description

We would like to specify column width for [Likert component](https://docs.altinn.studio/app/development/ux/components/likert/) when displayed as a Table. Today the width is calculated automatic, in some cases this doesn't look good.

### Additional Information

Config alt 1:
Specify the width property in the options file:
```json
[
{
"label": "Alltid",
"value": "1"
"width": "auto"
},
{
"label": "Nesten alltid",
"value": "2",
"width": "200px"
}
]
```

Config alt 2:
Specify columnWidth in layout.json:
```json
{
"id": "likert-row",
"type": "Likert",
"textResourceBindings": {
"title": "likert-row-title"
},
"dataModelBindings": {
"simpleBinding": "Questions.Answer"
},
"columnWidth": ["auto", "100px"],
"optionsId": "likertOptions",
"required": false,
"readOnly": false
}
```

Config alt 3:
Usually you would only want to specify equal width of each option column and one width for the first column, instead of specifiyng for every column seperatly.
Specify columnWidth in layout.json:
```json
{
"id": "likert-row",
"type": "Likert",
"textResourceBindings": {
"title": "likert-row-title"
},
"dataModelBindings": {
"simpleBinding": "Questions.Answer"
},
"columnWidth": {
"firstColumn": "auto",
"optionColumns": "100px",
},
"optionsId": "likertOptions",
"required": false,
"readOnly": false
}
```

A workaround we will use until this is released will be to add custom css in the index.html file:
```css
main th:first-child {
width: auto;
}
main th {
width: 100px;
}
```

Start with the Likert component documentation and locate the implementation of its table rendering in the TypeScript React frontend. Compare the three proposed configuration shapes and the current automatic sizing behavior, then confirm the chosen API handles the first and option columns as described. Done means column widths can be configured without the custom CSS workaround and the behavior is documented.

Written by the indexing model from the issue text.