feat: handle mobile portrait mode for current words table, improve top menù layout

style: improve margins for mobile interfaces

feat: start refactoring the UI interface on mobile

refactor: update example text within index.html

feat: add some helper functions from lite.koboldai.net integration

feat: handle correctly html text content nested within SPAN childNodes, like lite.koboldai.net editable mode

feat: setCaret(), handle case when user edit the contenteditable editor div

test: prepare playwright tests to ensure avoid regressions on text stemming results

feat: avoid removing multiple newlines from input text

feeat: new layout separating the list of prefix frequencies from the table of word positions

feat: small changes to make the frontend more similar to the components integrated into lite.koboldai.net

feat: now the frontend is more similar to the one within kite.koboldai.net; when digiting within the input field it's possible to fire the funtion pressing enter

feat: add optional embedded stemmer

feat: prepare a new playwright assertion, small html fixes

style: fix h4 and table cells styles for lite.koboldai.net

feat: improve compatibility with lite.koboldai.net

refactor: rename occurrences of "word frequency" to "words frequency"

feat: add message for mobile users for using the project in landscape mode

fix: update misleading html id and aria labels

feat: fix wrong id and aria labels on radio inputs

feat: add output table filtering, sorting and ordering

feat: refactor frontend, improve css style

feat: add a basic js frontend