Creates a variable
Aliases:
type myVar = value;
Type myVar = value;
var myVar =2;
var variableName variableType = variableValue
let myVar =2
let myVar =2;
var myVar =2
mymyVar =2;
myVar =2;
myVar =2
myVar = value
my_var <-2
my_var =2
var myVar: Type =3
myVar=value