Add support to set variables in search provider
GCalc is not yet used by the search provider, but if so could be possible to save values in variables and then use in another calculation
Steps:
- The user defines a variable by writing
x=3.1416
and git on the define (a UI is required) - The user can see the value of the variable by writing
x
- The user can see a calculation using the variable by writing
x*3+3/x