Add initial Microsoft Teams support

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

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

@@ -0,0 +1,13 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// ExpressionInputObject undocumented
+type ExpressionInputObject struct {
+	// Object is the base model of ExpressionInputObject
+	Object
+	// Definition undocumented
+	Definition *ObjectDefinition `json:"definition,omitempty"`
+	// Properties undocumented
+	Properties []StringKeyObjectValuePair `json:"properties,omitempty"`
+}