feat: update README to reflect addition of NATS RPC and enhance domain descriptions

[soltanoff]

This pull request updates the documentation in all three main language variants (README.md, README_CN.md, and README_RU.md) to clarify and expand on the available server types and supported domains in the Go Clean Template project. It also improves the accuracy of the architecture explanations and updates example code to match the current API. The changes ensure consistency across the English, Chinese, and Russian documentation.

Key documentation improvements:

Server types and supported domains:

• Updated all READMEs to state that the template implements four server types (REST, gRPC, AMQP RPC, NATS RPC), instead of three. [1] [2] [3]
• Added detailed sections describing the three fully implemented domains (User Authentication, Task Management, Translation) and their availability across all four transports, with operation tables and feature lists. [1] [2] [3]

Example code and usage updates:

• Updated example router code snippets to use unified v1.NewRoutes and v2.NewRoutes functions, reflecting the current API and reducing boilerplate in all controller types (REST, gRPC, AMQP RPC, NATS RPC). [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]

Architecture and terminology corrections:

• Clarified the location and naming of infrastructure packages, changing references from internal/usecase/repo and internal/usecase/webapi to internal/repo/persistent and internal/repo/webapi, and updated the explanation of the infrastructure layer accordingly. [1] [2] [3]
• Updated the recommended mocking tool from mockery to go.uber.org/mock for auto-generating mocks in all language variants. [1] [2] [3]

These changes bring the documentation up to date with the current codebase, improve clarity for new users, and ensure consistency across all supported languages.