HOPT doesn't work correctly if requested to generate 10-digit OTP.

[piapip]

Problem:

• The last power value used for the modulo step for 10-digit OTP misses a 0.
  https://github.com/uaraven/gotp/blob/a54e8ab5a9379b1087a0be38b1990f4fba1cfdd9/hotp.go#L160C83-L160C93

var powers = []int{
	1,           // digit:  0
	10,          // digit:  1
	100,         // digit:  2
	1000,        // digit:  3
	10000,       // digit:  4
	100000,      // digit:  5
	1000000,     // digit:  6
	10000000,    // digit:  7
	100000000,   // digit:  8
	1000000000,  // digit:  9
	10000000000, // digit: 10
}

[piapip]

I can't open a PR to this repo :3