Fix rpc documentation for Router Service

[saubyk]

Change Description

lncli tag added to SendPaymentV2, SendToRouteV2 and EstimateRouteFee rpcs to generate supporting API documentation for the shell commands.

E.g currently: https://lightning.engineering/api-docs/api/lnd/router/send-to-route-v2/ shows # There is no CLI command for this RPC on the shell section

[gemini-code-assist]

Summary of Changes

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This pull request addresses an issue with the generation of API documentation for the Router Service. By introducing specific lncli tags to several RPC methods, it ensures that the lncli shell commands are properly referenced in the automatically generated documentation, improving clarity and usability for developers interacting with the Lightning Network Daemon.

Highlights

• RPC Documentation: Added lncli tags to the SendPaymentV2, SendToRouteV2, and EstimateRouteFee RPC definitions within routerrpc.proto. This ensures that the generated API documentation correctly links these RPCs to their corresponding lncli shell commands.

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[gemini-code-assist]

Code Review

This pull request correctly adds the lncli: tags to several RPCs in the router.proto file, which will fix the generated API documentation. The changes are consistent and follow the project's conventions. I have one minor suggestion to update a placeholder in the release notes.

[ellemouton]

need to regenerate the protos 🙏 see failing CI