Add initial Microsoft Teams support

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

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

@@ -0,0 +1,15 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// AuditProperty undocumented
+type AuditProperty struct {
+	// Object is the base model of AuditProperty
+	Object
+	// DisplayName Display name.
+	DisplayName *string `json:"displayName,omitempty"`
+	// OldValue Old value.
+	OldValue *string `json:"oldValue,omitempty"`
+	// NewValue New value.
+	NewValue *string `json:"newValue,omitempty"`
+}