golang adapter: subtest run

[dennypenta]

When I run a line it starts the whole test function.
I would expect to start a subtest of it.
Trying to implement it now.
Pls let me know if you would like to see a PR.

[quolpr]

@dennypenta I will be happy to accept PR. I have the same issue too. I think it's connected with treesitter not completed expression.

You can take a better query from here https://github.com/fredrikaverpil/neotest-golang/blob/main/lua/neotest-golang/query.lua

[quolpr]

Fixed in #41 , thanks!