fix(transfercheck): fix currency formatting

[balzdur]

Introduce a currency formatter.

In short:

• add currency definition
• use a dedicated library to handle decimal conversion (and/or future manipulation)

NB: the library is tree-shaken, so we only use a portion of it in our bundle. Currencies definition are only use server side, in the adapter (so the full definition is not shipped to the client)

The huge amount used in the video is an example of "max int limitation" issue in JS (still, this is definitively not something we should face any time soon based on our current scope). More info in the dedicated Notion design doc