Add slash command for `water space people`

[srujandeshpande]

What do you want to see?

Add a slash command for water space people! The new file should be named spacePeople.js and should be present in the src/slashCommands directory You can refer to iss.js in the same directory for reference.

Name: space people Description: Names and spacecraft of the astronauts in space

[funwaa]

I gave it a shot. This is the first time of me doing JS outside of an HTML file... I hope I did it right!