Scale recipe according to one specific ingredient

[megosugit]

First Check

• I used the GitHub search to find a similar requests and didn't find it.
• Checked the tasks tagged issues and verified my feature is not covered

Please provide a concise description of the problem that would be addressed by this feature.

Let's say I have a chocolate mousse recipe which needs 5 eggs and I have only 4.
Wouldn't it be great to have the possibility to tell Mealie to scale the recipe for 4 eggs ?

Please provide a concise description of the feature that would resolve your issue.

Click on the scale button and select an ingredient to scale according to this ingredient, and then enter the number of such ingredient so Mealie can calculate all the other ingredients according to this one.

Please consider and list out some caveats or tradeoffs made in your design decision

nothing particular.

Additional Information

• If this is accepted I'm willing to submit a PR to provide this feature
• If this is accepted I'm willing to help maintain this feature
• I'm willing to sponsor/pay a developer to do this work