initial grouping for renovate

[dpvreony]

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"]
        }]
}