Add Test::Output to Ecosystem

Test the output to STDOUT and STDERR your program generates: https://github.com/zoffixznet/perl6-Test-Output

META.list

@@ -503,3 +503,4 @@ https://raw.githubusercontent.com/LLFourn/p6-CompUnit-Util/master/META6.json
 https://raw.githubusercontent.com/zoffixznet/perl6-IRC-Client-Plugin-Factoid/master/META.info
 https://raw.githubusercontent.com/jnthn/p6-test-io-socket-async/master/META.info
 https://raw.githubusercontent.com/scmorrison/perl6-aws-pricing/master/META.info
+https://raw.githubusercontent.com/zoffixznet/perl6-Test-Output/master/META.info