Display build/setup failures output

gotestsum is hiding the output when the test code cannot be built, which can make debugging harder.
For example:
```
package main

import (
"fmt"
"testing"

"github.com/stretchr/testify/require"
)

//go:embed toto.txt
var toto string

func TestHello(t *testing.T) {
fmt.Println("Hello, World!")
require.True(t, true)
}
```
Cannot be built because `embed` is not imported properly. If you try to run that test with `go test -v` you will get:
```
# testgo [testgo.test]
./main_test.go:10:3: go:embed only allowed in Go files that import "embed"
FAIL testgo [build failed]
```
with `gotestsum --format standard-verbose`:
```
FAIL testgo [build failed]

=== Failed
=== FAIL: . (0.00s)
FAIL testgo [build failed]

DONE 0 tests, 1 failure in 0.348s
```
Which is hard to debug. Would be nice to have a flag that allows us to have build error displayed, and not only `[build failed]`

Start by reproducing the example with gotestsum --format standard-verbose and compare its output with go test -v. Identify the command-line flag handling and output path involved; done means a user can opt in to seeing the compiler's build diagnostics instead of only [build failed].

Written by the indexing model from the issue text.