Add a way to opt-out of the summary

[kzu]

Since this uses the dotnet-trx command, the easy way is to disable reporting entirely (which will also disable GH reporting).

Fixes #29

[devlooped-bot]

🧪 Details on macOS Unix 14.6.1

✅ 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 v42.42.127-pr31 on .NET 8.0.8 with 💜