Add initial Microsoft Teams support

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

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

@@ -0,0 +1,17 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// DomainRegistrant undocumented
+type DomainRegistrant struct {
+	// Object is the base model of DomainRegistrant
+	Object
+	// CountryOrRegionCode undocumented
+	CountryOrRegionCode *string `json:"countryOrRegionCode,omitempty"`
+	// Organization undocumented
+	Organization *string `json:"organization,omitempty"`
+	// URL undocumented
+	URL *string `json:"url,omitempty"`
+	// Vendor undocumented
+	Vendor *string `json:"vendor,omitempty"`
+}