initial grouping for renovate

starter for getting grouping up and running. way renovate works is it will group with the latest match, it doesn't stop on the first match, so .net up top and rx further down to override it etc.

{
    "assigneesFromCodeOwners": true,
        "packageRules": [
        {
            "matchPackagePatterns": ["^Microsoft.*", "^System.*"],
            "groupName": "all microsoft dependencies",
            "groupSlug": "all-microsoft",
            "labels": ["dependencies"]
        },
        {
            "matchPackagePatterns": ["^Exceptionless.*"],
            "groupName": "all exceptionless dependencies",
            "groupSlug": "all-exceptionless",
            "labels": ["dependencies"]
        },
        {
            "matchPackagePatterns": ["^Microsoft.Reactive.*", "^System.Reactive", "^System.Reactive.*"],
            "groupName": "all reactive extensions",
            "groupSlug": "all-rx",
            "labels": ["dependencies"]
        },
        {
            "matchPackagePatterns": ["^ReactiveUI.*"],
            "groupName": "all reactiveui dependencies",
            "groupSlug": "all-reactiveui",
            "labels": ["dependencies"]
        },
        {
            "matchPackagePatterns": ["^Xamarin.*"],
            "groupName": "all xamarin dependencies",
            "groupSlug": "all-xamarin",
            "labels": ["dependencies"]
        },
        {
            "matchPackagePatterns": ["^xunit.*"],
            "groupName": "all xunit dependencies",
            "groupSlug": "all-xunit",
            "labels": ["dependencies"]
        }]
}

Start by locating the repository's Renovate configuration and review how package rules are currently defined. Add the proposed Microsoft, Exceptionless, Reactive Extensions, ReactiveUI, Xamarin, and xUnit grouping rules, preserving their ordering so later matches override earlier ones. Done means Renovate uses the named groups and dependency labels.