tools (common/utils): new methods to parse and generate file size with symbols: - `parseSize` lets parse a size which can be either a int, or a string with a symbol like `Mio` - `getSizeMultiplier` returns a tuple of size with it's multiplier symbol - `getHumanSize` returns a string with size and adapted multiplier.

version: "3.6"
services:

  prosody:
    image: libervia/prosody:demo
    build: prosody-demo

  backend:
    image: libervia/backend:dev-demo
    build: backend-dev-demo

  web:
    image: libervia/web:dev-demo
    build: libervia-web-dev-demo