[REQ] Helper function that converts human readable string like 1.5G to bytes (integer form string).

[soyfrien]

Is your feature request related to a problem? Please describe.
This is about #15, which I've decided is not a bug.

A helper function that converts swap_size to bytes from a human readable string is required.

Strings can occur with or without decimals, in upper or lower case. Always rounding down, example strings and conversions might be:

swap_size	𝑓(swap_size)	multiplier pattern
1234567890	1234567890	10240
1234567890.9	1234567890	10240
1205632.70k	1234567884	10241
1177.375M	1234567168	10242
1.14978G	1234566874	10243

The conversion can be a string in integer form.

Describe the solution you'd like
Perhaps a function that takes a string as an argument and returns a converted string.

Describe alternatives you've considered
I am mostly just curious to see how the help wanted tag works.