[Feature] Ability to run test of current scope

[maxkuzn]

Description

Currently, when running the nearest test using:

require("neotest").run.run()

Neotest executes the first test before the current line. However, in some cases, tests can be nested. For example, in Go:

func TestFoo(t *testing.T) {
	t.Run("subtest 1", func(t *testing.T) {
		// ...
	})

	// cursor here

	t.Run("subtest 2", func(t *testing.T) {
		// ...
	})
}

If the cursor is placed between t.Run("subtest 1") and t.Run("subtest 2"), I would expect Neotest to run the entire TestFoo. However, it currently runs "subtest 1".

Additionally, the summary buffer highlights "subtest 1", but I would expect it to highlight TestFoo, since the cursor isn't inside "subtest 1" anymore.

Expected Behavior

Neotest should run the test that fully contains the cursor, rather than defaulting to the first test before it.

Proposal

Would it be possible to add an option to run the most specific (innermost) test scope that the cursor is currently inside?
As I see it, it can be done either with additional option for neotest configuration or option for specified functions: run.run() and summary.open().

P.S. I'm willing to contribute a fix for this, but I’d need some guidance.