Change/Alias `finish` to `commit`

[mvalipour]

Currently the name of the finish command is misleading given it doesn't "Finish" the task/bug.

It should either be changed or aliased to commit. which is more grammatically/semantically correct.

[mvalipour]

Similar alias can be created:

https://github.com/mvalipour/onetime-cli/blob/master/src/commands/time/index.js#L13

[hisuwh]

Would prefer to alias this. Am used to and like finish