Add initial Microsoft Teams support

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

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

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// DeviceManagementExchangeAccessRule undocumented
+type DeviceManagementExchangeAccessRule struct {
+	// Object is the base model of DeviceManagementExchangeAccessRule
+	Object
+	// DeviceClass Device Class which will be impacted by this rule.
+	DeviceClass *DeviceManagementExchangeDeviceClass `json:"deviceClass,omitempty"`
+	// AccessLevel Access Level for Exchange granted by this rule.
+	AccessLevel *DeviceManagementExchangeAccessLevel `json:"accessLevel,omitempty"`
+}