Add an installation script for Streamystats

[Wernouxe]

Is your feature request related to a problem? Please describe.
There is no script for installing StreamyStats. Manual installation may be complicated or impossible (I have not tested it).

Describe the solution you'd like
Add a script to install StreamyStats

Describe alternatives you've considered
None, in my opinion?

Additional context
A script would enable quick and easy installation for users.

• https://github.com/fredrikburmester/streamystats

[brettpetch]

fredrikburmester/streamystats#366