[Feedback] Formula Card and Formula rules

Added excel-like formulas to a new card and excel formulas to rules:

- Enable the new feature flag:

# Formula card:

- On reports, a new dashboard type will show:

- Open the new card to show the editor:

- Query Definitions is where you are going to define the queries to fetch data. You will use it later in the formula
- Formula uses excel functions (in english)
- Press ctrl+space for suggestions:

- You can use dynamic font size (like the summary card), o set a specific font size:

- You can create conditional expression to color the number

This will paint the number as green for my example:

# Formula Rules
- You will see a new icon for fields that support formula (numeric and text fields. ID fields doesn't work)

- Clicking on it will enable the formula editor:

- The suggestion popover shows some variables related to this context

- Create the rule using the formulas and test it using the Apply actions to a single record:

- After saving it, you will see it in the rules:

Start by reading the latest comments on issue #5949, because the body describes how to try the Formula Card and Formula Rules rather than a specific change to make. The entry points mentioned are the feature flag, Reports dashboard card, formula editor, rules editor, and Apply actions to a single record. Done is not defined in the issue text; wait for a maintainer-scoped task before starting.

Scritto dal modello di indicizzazione a partire dal testo della issue.