Improve progress reporting by showing output

[kzu]

While running dotnet test, add its output as part of the overal task progress.

Add elapsed time for each attempt, as well as spinner progress.

[devlooped-bot]

🧪 Details on macOS Unix 14.5.0

✅ Sample.UnitTest1.FailsOnce
✅ Sample.UnitTest1.FailsTwice
✅ Sample.UnitTest1.Test1(value: 1)
✅ Sample.UnitTest1.Test1(value: 2)

🧪 Details on Ubuntu 22.04.4 LTS

✅ Sample.UnitTest1.FailsOnce
✅ Sample.UnitTest1.FailsTwice
✅ Sample.UnitTest1.Test1(value: 1)
✅ Sample.UnitTest1.Test1(value: 2)

🧪 Details on Microsoft Windows 10.0.20348

✅ Sample.UnitTest1.FailsOnce
✅ Sample.UnitTest1.FailsTwice
✅ Sample.UnitTest1.Test1(value: 1)
✅ Sample.UnitTest1.Test1(value: 2)

from dotnet-retest v42.42.56-pr13 on .NET 8.0.7 with 💜