Add initial Microsoft Teams support

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

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

@@ -0,0 +1,33 @@
+// Code generated by msgraph-generate.go DO NOT EDIT.
+
+package msgraph
+
+import "time"
+
+// BaseItem undocumented
+type BaseItem struct {
+	// Entity is the base model of BaseItem
+	Entity
+	// CreatedBy undocumented
+	CreatedBy *IdentitySet `json:"createdBy,omitempty"`
+	// CreatedDateTime undocumented
+	CreatedDateTime *time.Time `json:"createdDateTime,omitempty"`
+	// Description undocumented
+	Description *string `json:"description,omitempty"`
+	// ETag undocumented
+	ETag *string `json:"eTag,omitempty"`
+	// LastModifiedBy undocumented
+	LastModifiedBy *IdentitySet `json:"lastModifiedBy,omitempty"`
+	// LastModifiedDateTime undocumented
+	LastModifiedDateTime *time.Time `json:"lastModifiedDateTime,omitempty"`
+	// Name undocumented
+	Name *string `json:"name,omitempty"`
+	// ParentReference undocumented
+	ParentReference *ItemReference `json:"parentReference,omitempty"`
+	// WebURL undocumented
+	WebURL *string `json:"webUrl,omitempty"`
+	// CreatedByUser undocumented
+	CreatedByUser *User `json:"createdByUser,omitempty"`
+	// LastModifiedByUser undocumented
+	LastModifiedByUser *User `json:"lastModifiedByUser,omitempty"`
+}