Unable to run benchmark tasks on windows due to incorrect directory creation syntax

[mkovelamudi]

Unable to run benchmark tasks using "eval-dev-quality evaluate" command on windows due to usage of ":" in the directory creation syntax. Check the attached screenshot of the error.

Steps to reproduce

1. Install Go, Git
2. Clone the repository and install application.
3. Run "eval-dev-quality evaluate --model=openrouter/meta-llama/llama-3-70b-instruct" command.

System Configuration
Windows 10 pro

Findings
I found that in evaluat.go file (line 67), following format is used for directory creation.
command.ResultPath = strings.ReplaceAll(command.ResultPath, "%datetime%", evaluationTimestamp.Format("2006-01-02-15:04:05"))

Usage of ":", I believe is not supported for directory creation in windows.

[zimmski]

Thanks @mkovelamudi for the bug report. We only test on Linux but there should be no reason that this doesn't work on Windows. Let me give it a try for a few minutes and get back to you. I do not have a Windows/MacOS machine, so working on non-Linux thingies takes a bit.

[zimmski]

Added the easier OS first: MacOS support #102 which shows that we can port to other OSes. So taking a look now in supporting Windows.