Add initial Microsoft Teams support

Documentation on https://github.com/42wim/matterbridge/wiki/MS-Teams-setup

vendor/github.com/yaegashi/msgraph.go/beta/OsVersionCountModel.go

@@ -0,0 +1,17 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// OsVersionCount undocumented
+type OsVersionCount struct {
+	// Object is the base model of OsVersionCount
+	Object
+	// OsVersion OS version
+	OsVersion *string `json:"osVersion,omitempty"`
+	// DeviceCount Count of devices with malware for the OS version
+	DeviceCount *int `json:"deviceCount,omitempty"`
+	// LastUpdateDateTime The Timestamp of the last update for the device count in UTC
+	LastUpdateDateTime *time.Time `json:"lastUpdateDateTime,omitempty"`
+}