Add a `format` property to metrics + dimensions

We have a number metric type, but a lot of metrics are reported in %.

We should be able to set a number metric with the format percent (i.e. number, but take the result x 100 and stick a % symbol in front of it when it’s rendered on the frontend)

other examples are: gbp, usd, km, mi, etc.

The way you would define these formats is in the .yml files:

columns:
  name: revenue
    meta:
      metrics:
        total_revenue:
          type: sum
          format: usd

In the UI, the values in the revenue column would now appear like: $40.00 $567.00 etc.

[github-actions[bot]]

🎉 This issue has been resolved in version 0.46.0 🎉

The release is available on:

• 0.46.0
• GitHub release

Your semantic-release bot 📦🚀

[rephus]

Suggestion by @ZeRego

I would break down this work into multiple PR’s:

• have BE both raw values and formatted values ( how will this the structured ? thats the big question )
• change FE to use the formatted values ( this can be split into multiple PRs eg. explore table / chart )
• add support for custom formatting ( can be done in parallel with 2.)

Full discussion here: https://lightdash.slack.com/archives/C02GQKJK84Q/p1648200189589119