Add initial Microsoft Teams support

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

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

@@ -0,0 +1,15 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// GroupPolicyPresentationDropdownList Represents an ADMX dropdownList element and an ADMX enum element.
+type GroupPolicyPresentationDropdownList struct {
+	// GroupPolicyPresentation is the base model of GroupPolicyPresentationDropdownList
+	GroupPolicyPresentation
+	// DefaultItem Localized string value identifying the default choice of the list of items.
+	DefaultItem *GroupPolicyPresentationDropdownListItem `json:"defaultItem,omitempty"`
+	// Items Represents a set of localized display names and their associated values.
+	Items []GroupPolicyPresentationDropdownListItem `json:"items,omitempty"`
+	// Required Requirement to enter a value in the parameter box. The default value is false.
+	Required *bool `json:"required,omitempty"`
+}