Add convert from UTF-8-MAC to UTF-8

Command for converting characters from NFD (Normalization Form D) to NFC (Normalization Form D)

for example

**NFD**
`バ` (0x30cf 0x3099)
-> `ハ` + `゛`
non OSX system loooks like this

**NFC**
`バ` (0x30d0)