Add initial Microsoft Teams support

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

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

@@ -0,0 +1,23 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// DirectoryDefinition undocumented
+type DirectoryDefinition struct {
+	// Entity is the base model of DirectoryDefinition
+	Entity
+	// DiscoveryDateTime undocumented
+	DiscoveryDateTime *time.Time `json:"discoveryDateTime,omitempty"`
+	// Discoverabilities undocumented
+	Discoverabilities *DirectoryDefinitionDiscoverabilities `json:"discoverabilities,omitempty"`
+	// Name undocumented
+	Name *string `json:"name,omitempty"`
+	// Objects undocumented
+	Objects []ObjectDefinition `json:"objects,omitempty"`
+	// ReadOnly undocumented
+	ReadOnly *bool `json:"readOnly,omitempty"`
+	// Version undocumented
+	Version *string `json:"version,omitempty"`
+}