Changes decimal separator in string numeric value to point.
Arguments: value
It is expected that [value] matches [+-]([0-9]*[decimal-separator])?[0-9]+
where decimal-separator can be any char except [0-9], + and -.
Returns numeric string with point as decimal separator, which matches [+-]([0-9]*[.])?[0-9]+
## Usage
(require '[utilities.string-formatter :refer :all])
(to-numeric "123,567")
=> "123.567"
(to-numeric "-5,89")
=> "5.89"
(to-numeric "1")
=> "1"
(to-numeric ",02")
=> ".02"
(to-numeric "+8,2")
=> "+8.2"
(to-numeric "-1")
=> "-1"
(to-numeric "5,")
=> "5."
(to-numeric "4;5")
=> "4.5"