Make ApplicationInsightsInitConfig public instead of internal

[danielmazzini]

You have this code in the ApplicationInsightsInit component.

public partial class ApplicationInsightsInit
{
    [Inject] IApplicationInsights ApplicationInsights { get; set; }
    [Inject] private IJSRuntime JSRuntime { get; set; }
    [Inject] private ApplicationInsightsInitConfig Config { get; set; }

The last injected class should be public to try to mock it in unit test