Support python virtual environment in Report

[CasinoHe]

Expected Behavior

Read python venv from configuration file and support virtual environment in Report project

Actual Behavior

1. Add "python-venv" in Report's configuration
2. Activate python virtuan environment in Report generating.

Potential Solution

add Python.PythonInitializer.ActivatePythonVirtualEnvironment(Config.Get("python-venv")); in construct function of Report or the Main function of Report.

Checklist

• [x] I have completely filled out this template
• [x] I have confirmed that this issue exists on the current master branch
• [x] I have confirmed that this is not a duplicate issue by searching issues

[Martin-Molinero]

Thanks for the report, we will look into it 👍. Python initialization is deep into the base ChartReportElement, I think as part of solving this issue it should be moved to a more central location, maybe in the Report constructor where all the rest is initialized