New widget: text type widget with formatting options

Description

Adding a new widget type for our dashboards. This is part of @Chris75’s request (Widget personnalisable) in case his request is not accepted.

The idea: a text widget with formatting options (bold, italic, underlined, centered, left, right…). This allows categorizing by a label, for example, our columns/rows (in the future :slight_smile: ) of widgets.

Ex.: a house with 3 levels for which I want to display the room temperatures with a distribution by floor. I choose a presentation in 3 columns (1 per floor) with all the temperature sensors distributed across each column; at the top of the columns, I use this new widget to put the floor label (1st floor, Ground floor, Garden floor for example).