Adding golang example

[KennethThompson]

Sorry- I am new to pull requests so some extra bits got swept in. Please consider adding the sql.go

[kou]

Thanks!

Can I push fixes to this branch directly or do you want to fix by yourself?

Here are items we need to fix:

• Remove .vscode/: It seems that it depends on your environment.
• Revert needless change in examples/sql.py.
• Add license header to examples/sql.go.
• Add a step to our CI job to run examples/sql.go.
• Add a configuration to build examples/sql.go into examples/meson.build.
• Add a description about examples/sql.go into README.md.

[KennethThompson]

I'll give it a shot. I was once useful, but now its hit or miss.