Integrate CLI runner in CLI trait

[mattsse]

in reth bin we do

reth/bin/reth/src/cli/mod.rs

Line 145 in d3091cb

let runner = CliRunner::default();

we can integrate this in the CLI crate with a helper function

reth/crates/cli/cli/src/lib.rs

Line 21 in d3091cb

pub trait RethCli: Sized {

eg:

fn with_runner(self, FnOnce(self, CliRunner)

can be combined with the parse function, like execute(FnOnce(Self, CliRunner))

[leruaa]

I can take this on.