Add initial Microsoft Teams support

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

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

@@ -0,0 +1,19 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// EventMessageRequestObject undocumented
+type EventMessageRequestObject struct {
+	// EventMessage is the base model of EventMessageRequestObject
+	EventMessage
+	// PreviousLocation undocumented
+	PreviousLocation *Location `json:"previousLocation,omitempty"`
+	// PreviousStartDateTime undocumented
+	PreviousStartDateTime *DateTimeTimeZone `json:"previousStartDateTime,omitempty"`
+	// PreviousEndDateTime undocumented
+	PreviousEndDateTime *DateTimeTimeZone `json:"previousEndDateTime,omitempty"`
+	// ResponseRequested undocumented
+	ResponseRequested *bool `json:"responseRequested,omitempty"`
+	// AllowNewTimeProposals undocumented
+	AllowNewTimeProposals *bool `json:"allowNewTimeProposals,omitempty"`
+}