Problem when invoking consumption function

[sgiarols]

Describe the bug

The function "consumption" is calculated over the total of commodity products. Care should be taken when by-products are present.

To Reproduce

Using the "consumption" as invoked in muse.quantities.consumption and adding commodities which are not the main output. The basis for the calculation is the total commodity outputs rather than the sole main products.

Context

Please, complete the following to better understand the system you are using to run MUSE.

• Operative system (eg. Windows 10): MacOS
• MUSE version (eg. 1.0.1): 1.1.0
• Installation method (eg. pipx, pip, development mode): development mode
• Python version (you can get this running python --version): 3.9

[tsmbland]

The consumption function was changed in #601 , and I believe this fixes the concern raised here