Kotlin Theodolite: Fix Csv export

Prometheus responses can contain commas. Since we are writing the responses data in csv data this results in a "broken" table (like below). {consumergroup=theodolite-uc1-application-0.0.1 , topic=input} , 1655552205 , 132621 This gets interpreted as 4 colums by standard csv instead of 3. It can be fixed by adding a quotation marks to values in which , appears.

| labels                                          | timestamp     | value      |        |
|-------------------------------------------------|---------------|------------|--------|
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552205 | 132621 |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552210 | 132621 |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552215 | 132621 |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552220 | 330    |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552225 | 330    |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552230 | 330    |
| {consumergroup=theodolite-uc1-application-0.0.1 |  topic=input} | 1655552235 | 1012   |