added char counter to give feedback if too long input

[kulturpessimist]

Hi Corgea Team, I totally celebrate retriever, because I often had the problem that retriever solves, but I never had the idea for such a nice little handy solution. Kudos! Only problem I had recently was that I provided too much input and then got stuck, until I found out that there is a size limit currently. Until that is resolved I just added a little char counter beneath the textarea and a style if the input is too big. Error state: Normal state:

Maybe you find it helpful. Kind regards. Alex