feat(api): 🎉 Add business profile and catalog management

* Implement endpoints for managing business profiles:
  - Get business profile
  - Update business profile

* Add catalog management features:
  - List catalogs
  - List products in a catalog
  - Send catalog messages
  - Send single product messages
  - Send product list messages

* Introduce media upload functionality for sending media files.

* Add flow management capabilities:
  - Deprecate flows

* Update API documentation to reflect new endpoints and features.

pkg/whatsapp/businessapi/flows.go

@@ -65,6 +65,13 @@ func (c *Client) PublishFlow(ctx context.Context, flowID string) error {
 	return c.graphAPIPost(ctx, flowID+"?action=PUBLISH", nil, &resp)
 }
 
+// DeprecateFlow transitions a PUBLISHED flow to DEPRECATED.
+// Deprecated flows block new sessions but remain usable by sessions already in progress.
+func (c *Client) DeprecateFlow(ctx context.Context, flowID string) error {
+	var resp FlowActionResponse
+	return c.graphAPIPost(ctx, flowID+"?action=DEPRECATE", nil, &resp)
+}
+
 // DeleteFlow permanently removes a flow.
 func (c *Client) DeleteFlow(ctx context.Context, flowID string) error {
 	return c.graphAPIDelete(ctx, flowID, nil)