Suggestion: allow variables to be selected based on a pattern in "input_variables" column of harmo rules

[zchenmr]

Since some harmo rules may use a lot of variables, it would be useful to be able to indicate the variables in "input_variables" using a pattern (ex: contains("xxx"), matches("xxx"), etc.) instead of having to list them all out individually. This would also save space and may be easier to read. One potential drawback would be not having a full explicit list of variables used for documentation purposes, but it would simplify the harmonization process.

[GuiFabre]

good point, and good drawback highlight. Will be discussed in a future development stage