AI update based on proto changes

[viambot]

This is an AI-generated PR to update the SDK based on proto changes. The AI may make mistakes so review carefully.

Summary of Changes:
This update introduces several new features and updates existing ones:

• Dataset Merging: Implemented the mergeDatasets RPC, allowing users to combine multiple datasets into a new one. This includes updates to the dataset protobuf definitions and the DataClient.
• Immediate Invoicing: Added the CreateInvoiceAndChargeImmediately RPC to the Billing service, enabling on-the-spot invoice creation and charging for organizations. This involves new protobuf definitions and updates to the BillingClient.
• Robot Part Enhancements: The RobotPart definition now includes isMainPart and dnsName fields, improving the detail available for robot parts.
• Camera Image Filtering: The GetImagesRequest now supports filtering by filterSourceNames for more specific image retrieval, and the Image message includes a mimeType field.
• Classification ID: Added an id field to the Classification message.

The changes also include corresponding client implementation updates and unit tests for the new functionalities.