catch any exceptions in cli_entrypoint startup flow

[glyh]

As title. This is designed because of https://discord.com/channels/484437221055922177/1450202839430201506

Their daemon died without any messages logged.

[cjjdespres]

There's a handle_crash method in init/mina_run.ml that renders exceptions to json like this:

mina/src/app/cli/src/init/mina_run.ml

Lines 755 to 758 in 217c823

	let exn_json = Error_json.error_to_yojson (Error.of_exn ~backtrace:`Get e) in
	[%log' fatal top_logger]
	"Unhandled top-level exception: $exn\nGenerating crash report"
	~metadata:[ ("exn", exn_json) ] ;

Can something similar be used here and in the other place, so we get more structured errors in the logs?

[glyh]

Make sense, will patch

[cjjdespres]

Is there any easy way of triggering an exception that would be caught and logged in these places? I'm mostly curious what the new log message would actually look like, to see if it would have been helpful to the user from that discord thread or not.

[glyh]

Misconfigured wallet is one of them, I could add unit tests.