coin select: add coin selection strategy option to all on-chain RPCs

[guggero]

Comment from #8378:

          Yeah, I think that makes sense. Though it feels like that would be a different PR, as we'd probably also want to add such new parameters to the existing RPCs that currently use the config-level strategy (`FundPsbt`, `EstimateFee`, `SendCoins`, `SendOutputs`).

Originally posted by @guggero in #8378 (comment)

Currently, the coin selection strategy can only be configured globally, via the --coin-selection-strategy=[largest|random] config/CLI option.
But because the strategy might be something a user wants to decide upon for every spend, a similar option should be added to all on-chain RPCs such as the ones mentioned in the original comment above.

[mohamedawnallah]

@guggero I found there is no CLI command for the SendOutputs RPC as in the code and Lightning Engineering API Docs - SendOutputs RPC Call. Is it okay to submit a PR for adding lncli sendoutputs command + configuring the coin selection strategy option?

[guggero]

I don't think that is needed. That would require you to specify the pk scripts on the command line, which is kind of awkward. I think in the CLI the sendcoins command should cover all requirements. Or why exactly do you think we'd need a new command?
Also, please keep in mind that reviewing PRs, especially from new contributors, takes a lot of time from the maintainers. So if you really want to support the project, I'd suggest to also start looking into testing and reviewing pull requests from other people instead of writing more code.

[mohamedawnallah]

Got it @guggero! Thanks for clarifying :)