ByteCulator: First project on the streets

byteculator overcomes overflow problem, using strings for implementing basic math operations, so this way the calculations can even exceed the integer or float number boundaries

Input note:

terms and operators must all be seperated by spaces suchs: 2 + 5 * 6 - 4

Features:

1- Supported Operations: Addition (+), Substraction (-), Multiply (*), Power (^)
2- Numbers are stored as strings, so the numbers can be large as possible (Maximum number of supported digis equals to maximum supported string length in rust)
3- Solves and logs the expressions step by step
    step by step log can be disabled by -l param:
    e.g.: 4 * 25 -l + 2 ^ 4
        => just logs 4 * 25 and then show final result
4- you can also use Full logging to even solve the calculations in more details,
    including digit by digit multiply, or step by step power
    use +f param to enable full log before the terms you want:
    2 ^ 5 +f + 10 ^ 5 -f * 10
    and -f to turn full log off.
5- -l/+l and -f/+f params can be used in any place, so you can exactly determine
    which part of the expression should be logged or full logged.
5- For now calculations are limited to integers
6- Priorities are supported; +p param enables priority, -p param disables priority
7- enter x or empty input to close the app.

P.S.

This is the first project coded while walking the streets. so its kind of special for me :]