Add initial Microsoft Teams support

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

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

@@ -0,0 +1,25 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+// MessageRule undocumented
+type MessageRule struct {
+	// Entity is the base model of MessageRule
+	Entity
+	// DisplayName undocumented
+	DisplayName *string `json:"displayName,omitempty"`
+	// Sequence undocumented
+	Sequence *int `json:"sequence,omitempty"`
+	// Conditions undocumented
+	Conditions *MessageRulePredicates `json:"conditions,omitempty"`
+	// Actions undocumented
+	Actions *MessageRuleActions `json:"actions,omitempty"`
+	// Exceptions undocumented
+	Exceptions *MessageRulePredicates `json:"exceptions,omitempty"`
+	// IsEnabled undocumented
+	IsEnabled *bool `json:"isEnabled,omitempty"`
+	// HasError undocumented
+	HasError *bool `json:"hasError,omitempty"`
+	// IsReadOnly undocumented
+	IsReadOnly *bool `json:"isReadOnly,omitempty"`
+}