Generate random password

How to use?

```shell script $ cargo install grp

$ grp 16 4 4

Output: 8*_t99m(cCK6[UQi

Length of password: 16, amount of symbols: 4, amount of numbers: 4

$ grp

Output: nibIQG2D9D_uDtQ4

Defaults to: grp 12 1 3

```

Build yourself

```shell script $ cargo run length symbolscount numberscount --release

$ cargo run --release

Defaults to: cargo run 12 1 3 --release

```