Add initial Microsoft Teams support

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

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

@@ -0,0 +1,21 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// AdministrativeUnit undocumented
+type AdministrativeUnit struct {
+	// DirectoryObject is the base model of AdministrativeUnit
+	DirectoryObject
+	// DisplayName undocumented
+	DisplayName *string `json:"displayName,omitempty"`
+	// Description undocumented
+	Description *string `json:"description,omitempty"`
+	// Visibility undocumented
+	Visibility *string `json:"visibility,omitempty"`
+	// Members undocumented
+	Members []DirectoryObject `json:"members,omitempty"`
+	// ScopedRoleMembers undocumented
+	ScopedRoleMembers []ScopedRoleMembership `json:"scopedRoleMembers,omitempty"`
+	// Extensions undocumented
+	Extensions []Extension `json:"extensions,omitempty"`
+}