Improve level function

[ArmandBriere]

Is your feature request related to a problem? Please describe.
Level returns an URL to og-vercel cloud function.
Download the image inside the cloud function and returns the base64 image to the main node
This will decrease the number of call to the og-vercel function

Describe the solution you'd like

• http get request og-vercel function from level function
• encode result in bas64
• Returns it to the main node
• Main node:
  • slash command -> decode and return image
  • normal command -> detect that it is an image -> decode and return it

[CmD0]

This was resolved today with the merge to prod as far as I can tell.