Make the items array usable

[matthias-eb]

Currently, it is almost impossible to format the written Text even in the simplest of ways when using the items array.
There is no way to create newline characters, to make Text fat or italic or to create simple lists.
When falling back to the children option, we have to basically rewrite everything as a child component now, as the children cannot be put at any position in the items array, but even override the first n inputs, n being the number of children. Currently, this makes using the items array unusable, when even the simplest of formattings is required.

To target this problem, I would like to either...

...have the option to write markdown into the strings, as this allows for all the necessary formatting in a clear and concise way, or...

...have the option to use some html tags inside strings, or...

...have the option to use pure html inside the items array. This somewhat exists with the timelineContent field, but it currently doesn't work with the readMore button and the styling.