Add initial Microsoft Teams support

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

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

@@ -0,0 +1,23 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// Account undocumented
+type Account struct {
+	// Entity is the base model of Account
+	Entity
+	// Number undocumented
+	Number *string `json:"number,omitempty"`
+	// DisplayName undocumented
+	DisplayName *string `json:"displayName,omitempty"`
+	// Category undocumented
+	Category *string `json:"category,omitempty"`
+	// SubCategory undocumented
+	SubCategory *string `json:"subCategory,omitempty"`
+	// Blocked undocumented
+	Blocked *bool `json:"blocked,omitempty"`
+	// LastModifiedDateTime undocumented
+	LastModifiedDateTime *time.Time `json:"lastModifiedDateTime,omitempty"`
+}