This PR aims to provide a first draft for business KPIs, at this stage **quite minimal**.
It mostly contains a MTD and Monthly display approach. No dimensions are created.
The models created are:
- **int_dates_mtd**: mainly it reads from int_dates to retrieve those days needed for a MTD/monthly display
- **int_core__mtd_booking_metrics**: it contains the booking metrics, ending in a format of date|value|value last year|increment
--> here we could add, in the future, additional metrics from other sources (ex: guest journey, etc)
- **int_core__mtd_aggregated_metrics**: it transforms the data coming from the different mtd intermediate sources to be easily displayed in the dashboard. This is a good candidate for macros :)
- **core__mtd_aggregated_metrics**: copy-paste of the its int_core version, including a bit of model documentation
The dashboard is functional but in another PR. I can show you how it looks like at the moment you are going to check the PR
Related work items: #17214
